|
|
ARM Microcontrollers - MCU Kinetis MT64 44LQFP
- MKE04Z64VLD4
- NXP Semiconductors
-
1:
$4.92
-
1,846In Stock
|
Mouser Part No
841-MKE04Z64VLD4
|
NXP Semiconductors
|
ARM Microcontrollers - MCU Kinetis MT64 44LQFP
|
|
1,846In Stock
|
|
|
$4.92
|
|
|
$3.73
|
|
|
$3.43
|
|
|
$3.04
|
|
|
View
|
|
|
$2.92
|
|
|
$2.81
|
|
|
$2.62
|
|
|
$2.61
|
|
|
Quote
|
|
Min.: 1
Mult.: 1
|
|
|
KE04
|
SMD/SMT
|
LQFP-44
|
ARM Cortex M0+
|
64 kB
|
32 bit
|
12 bit
|
48 MHz
|
38 I/O
|
8 kB
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU Kinetis MT128 64LQFP
- MKE04Z64VLH4
- NXP Semiconductors
-
1:
$4.88
-
800In Stock
|
Mouser Part No
841-MKE04Z64VLH4
|
NXP Semiconductors
|
ARM Microcontrollers - MCU Kinetis MT128 64LQFP
|
|
800In Stock
|
|
|
$4.88
|
|
|
$3.72
|
|
|
$3.42
|
|
|
$3.02
|
|
|
View
|
|
|
$2.98
|
|
|
$2.63
|
|
|
$2.61
|
|
Min.: 1
Mult.: 1
|
|
|
KE04
|
SMD/SMT
|
LQFP-64
|
ARM Cortex M0+
|
64 kB
|
32 bit
|
12 bit
|
48 MHz
|
58 I/O
|
8 kB
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU 72MHz, 5V Main Stream CM0+ MCU
- MKE14Z256VLH7
- NXP Semiconductors
-
1:
$6.62
-
1,181In Stock
|
Mouser Part No
841-MKE14Z256VLH7
|
NXP Semiconductors
|
ARM Microcontrollers - MCU 72MHz, 5V Main Stream CM0+ MCU
|
|
1,181In Stock
|
|
|
$6.62
|
|
|
$5.08
|
|
|
$4.70
|
|
|
$4.18
|
|
|
View
|
|
|
$4.04
|
|
|
$3.91
|
|
|
$3.72
|
|
|
$3.68
|
|
|
Quote
|
|
Min.: 1
Mult.: 1
|
|
|
KE1xZ
|
SMD/SMT
|
LQFP-64
|
ARM Cortex M4
|
256 kB
|
32 bit
|
12 bit
|
72 MHz
|
58 I/O
|
32 kB
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU CORTEX M0+ 64K FLASH
- MKL26Z64VFM4
- NXP Semiconductors
-
1:
$4.91
-
2,438In Stock
|
Mouser Part No
841-MKL26Z64VFM4
|
NXP Semiconductors
|
ARM Microcontrollers - MCU CORTEX M0+ 64K FLASH
|
|
2,438In Stock
|
|
|
$4.91
|
|
|
$3.55
|
|
|
$3.34
|
|
|
$3.05
|
|
|
View
|
|
|
$2.88
|
|
|
$2.76
|
|
|
$2.65
|
|
|
$2.64
|
|
Min.: 1
Mult.: 1
|
|
|
KL2x
|
SMD/SMT
|
QFN-32
|
ARM Cortex M0+
|
64 kB
|
32 bit
|
16 bit
|
48 MHz
|
23 I/O
|
8 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU Kinetis KM33: 50MHz Cortex-M0+ Metrology MCU, 128KB Flash, 16KB SRAM, Segment LCD, 64-LQFP
- MKM33Z128ACLH5
- NXP Semiconductors
-
1:
$7.61
-
525In Stock
|
Mouser Part No
841-MKM33Z128ACLH5
|
NXP Semiconductors
|
ARM Microcontrollers - MCU Kinetis KM33: 50MHz Cortex-M0+ Metrology MCU, 128KB Flash, 16KB SRAM, Segment LCD, 64-LQFP
|
|
525In Stock
|
|
|
$7.61
|
|
|
$5.88
|
|
|
$5.45
|
|
|
$4.84
|
|
|
View
|
|
|
$4.69
|
|
|
$4.47
|
|
|
$4.45
|
|
Min.: 1
Mult.: 1
|
|
|
KM3x
|
SMD/SMT
|
LQFP-64
|
ARM Cortex M0+
|
128 kB
|
32 bit
|
24 bit
|
50 MHz
|
38 I/O
|
16 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 85 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU Kinetis KV10: 75MHz Cortex-M0+ Real-time Control MCU, 32KB Flash, 8KB SRAM, 48-LQFP
- MKV10Z32VLF7
- NXP Semiconductors
-
1:
$4.90
-
1,008In Stock
|
Mouser Part No
841-MKV10Z32VLF7
|
NXP Semiconductors
|
ARM Microcontrollers - MCU Kinetis KV10: 75MHz Cortex-M0+ Real-time Control MCU, 32KB Flash, 8KB SRAM, 48-LQFP
|
|
1,008In Stock
|
|
|
$4.90
|
|
|
$3.17
|
|
|
$3.04
|
|
|
$2.83
|
|
|
View
|
|
|
$2.54
|
|
|
$2.50
|
|
|
$2.49
|
|
Min.: 1
Mult.: 1
|
|
|
KV1x
|
SMD/SMT
|
LQFP-48
|
ARM Cortex M0+
|
32 kB
|
32 bit/16 bit
|
16 bit
|
75 MHz
|
40 I/O
|
8 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU 64K FLASH 4K RAM 40MHz 32LQFP
- S9KEAZN64AMLC
- NXP Semiconductors
-
1:
$3.83
-
2,317In Stock
|
Mouser Part No
841-S9KEAZN64AMLC
|
NXP Semiconductors
|
ARM Microcontrollers - MCU 64K FLASH 4K RAM 40MHz 32LQFP
|
|
2,317In Stock
|
|
|
$3.83
|
|
|
$2.88
|
|
|
$2.65
|
|
|
$2.40
|
|
|
View
|
|
|
$2.26
|
|
|
$2.07
|
|
|
$1.91
|
|
|
$1.90
|
|
Min.: 1
Mult.: 1
|
|
|
KEA
|
SMD/SMT
|
LQFP-32
|
ARM Cortex M0+
|
64 kB
|
32 bit
|
12 bit
|
40 MHz
|
28 I/O
|
4 kB
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 125 C
|
AEC-Q100
|
Tray
|
|
|
|
ARM Microcontrollers - MCU Kinetis E 32-bit MCU, ARM Cortex-M0+ core, 8KB Flash, Automotive Qualified, 48MHz, 16TSSOP
- S9KEAZN8AMTGR
- NXP Semiconductors
-
1:
$2.26
-
2,320In Stock
|
Mouser Part No
841-S9KEAZN8AMTGR
|
NXP Semiconductors
|
ARM Microcontrollers - MCU Kinetis E 32-bit MCU, ARM Cortex-M0+ core, 8KB Flash, Automotive Qualified, 48MHz, 16TSSOP
|
|
2,320In Stock
|
|
|
$2.26
|
|
|
$1.67
|
|
|
$1.52
|
|
|
$1.36
|
|
|
View
|
|
|
$1.05
|
|
|
$1.28
|
|
|
$1.22
|
|
|
$1.10
|
|
|
$1.05
|
|
Min.: 1
Mult.: 1
|
|
|
KEA
|
SMD/SMT
|
TSSOP-16
|
ARM Cortex M0+
|
8 kB
|
32 bit
|
12 bit
|
48 MHz
|
14 I/O
|
1 kB
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 125 C
|
AEC-Q100
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU KINETIS 32K
- MK10DN32VFM5
- NXP Semiconductors
-
1:
$4.93
-
2,882In Stock
|
Mouser Part No
841-MK10DN32VFM5
|
NXP Semiconductors
|
ARM Microcontrollers - MCU KINETIS 32K
|
|
2,882In Stock
|
|
|
$4.93
|
|
|
$3.62
|
|
|
$3.41
|
|
|
$3.11
|
|
|
View
|
|
|
$2.99
|
|
|
$2.79
|
|
|
$2.66
|
|
Min.: 1
Mult.: 1
|
|
|
K10_50
|
SMD/SMT
|
QFN-32
|
ARM Cortex M4
|
32 kB
|
32 bit
|
16 bit
|
50 MHz
|
24 I/O
|
8 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU KINETIS 128K FLEX
- MK10DX128VLQ10
- NXP Semiconductors
-
1:
$9.54
-
294In Stock
|
Mouser Part No
841-MK10DX128VLQ10
|
NXP Semiconductors
|
ARM Microcontrollers - MCU KINETIS 128K FLEX
|
|
294In Stock
|
|
|
$9.54
|
|
|
$8.28
|
|
|
$7.75
|
|
|
$7.59
|
|
|
$7.33
|
|
Min.: 1
Mult.: 1
|
|
|
K10_100
|
SMD/SMT
|
LQFP-144
|
ARM Cortex M4
|
128 kB
|
32 bit
|
2 x 16 bit
|
32 MHz
|
104 I/O
|
32 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU KINETIS 128K FLEX
- MK20DX128VFM5
- NXP Semiconductors
-
1:
$7.91
-
1,668In Stock
|
Mouser Part No
841-MK20DX128VFM5
|
NXP Semiconductors
|
ARM Microcontrollers - MCU KINETIS 128K FLEX
|
|
1,668In Stock
|
|
|
$7.91
|
|
|
$6.11
|
|
|
$5.66
|
|
|
$5.18
|
|
|
View
|
|
|
$5.16
|
|
|
$4.55
|
|
|
$4.42
|
|
Min.: 1
Mult.: 1
|
|
|
K20_50
|
SMD/SMT
|
QFN-32
|
ARM Cortex M4
|
128 kB
|
32 bit
|
16 bit
|
50 MHz
|
20 I/O
|
16 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU K60-1M
- MK64FX512VMD12
- NXP Semiconductors
-
1:
$19.26
-
592In Stock
|
Mouser Part No
841-MK64FX512VMD12
|
NXP Semiconductors
|
ARM Microcontrollers - MCU K60-1M
|
|
592In Stock
|
|
|
$19.26
|
|
|
$15.89
|
|
|
$15.22
|
|
|
$13.41
|
|
|
View
|
|
|
$12.76
|
|
|
$12.39
|
|
|
$11.64
|
|
|
Quote
|
|
Min.: 1
Mult.: 1
|
|
|
K64_120
|
SMD/SMT
|
MAPBGA-144
|
ARM Cortex M4
|
512 kB
|
32 bit
|
16 bit
|
120 MHz
|
|
256 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU Kinetis K 32-bit MCU
- MK66FX1M0VMD18
- NXP Semiconductors
-
1:
$16.43
-
713In Stock
|
Mouser Part No
841-MK66FX1M0VMD18
|
NXP Semiconductors
|
ARM Microcontrollers - MCU Kinetis K 32-bit MCU
|
|
713In Stock
|
|
|
$16.43
|
|
|
$14.46
|
|
|
$14.12
|
|
|
$13.82
|
|
Min.: 1
Mult.: 1
|
|
|
K66_180
|
SMD/SMT
|
MAPBGA-144
|
ARM Cortex M4F
|
1.25 MB
|
32 bit
|
16 bit
|
180 MHz
|
100 I/O
|
256 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU Kinetis E 64K flash 40Mhz 64LQFP
- MKE02Z64VLH4R
- NXP Semiconductors
-
1:
$4.48
-
3,762In Stock
|
Mouser Part No
841-MKE02Z64VLH4R
|
NXP Semiconductors
|
ARM Microcontrollers - MCU Kinetis E 64K flash 40Mhz 64LQFP
|
|
3,762In Stock
|
|
|
$4.48
|
|
|
$3.40
|
|
|
$3.12
|
|
|
$2.83
|
|
|
$2.33
|
|
|
View
|
|
|
$2.67
|
|
|
$2.63
|
|
|
$2.22
|
|
Min.: 1
Mult.: 1
|
|
|
KE02_40
|
SMD/SMT
|
LQFP-64
|
ARM Cortex M0+
|
64 kB
|
32 bit
|
12 bit
|
40 MHz
|
57 I/O
|
4 kB
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 105 C
|
|
Reel, Cut Tape
|
|
|
|
ARM Microcontrollers - MCU MT512P 64LQFP
- MKE16F256VLH16
- NXP Semiconductors
-
1:
$7.90
-
2,041In Stock
|
Mouser Part No
841-MKE16F256VLH16
|
NXP Semiconductors
|
ARM Microcontrollers - MCU MT512P 64LQFP
|
|
2,041In Stock
|
|
|
$7.90
|
|
|
$6.11
|
|
|
$5.65
|
|
|
$5.04
|
|
|
View
|
|
|
$4.87
|
|
|
$4.61
|
|
|
$4.29
|
|
Min.: 1
Mult.: 1
|
|
|
KE1xF
|
SMD/SMT
|
LQFP-64
|
ARM Cortex M4
|
256 kB
|
32 bit
|
12 bit
|
168 MHz
|
58 I/O
|
32 kB
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU MT512P 100LQFP
- MKE16F256VLL16
- NXP Semiconductors
-
1:
$7.06
-
380In Stock
|
Mouser Part No
841-MKE16F256VLL16
|
NXP Semiconductors
|
ARM Microcontrollers - MCU MT512P 100LQFP
|
|
380In Stock
|
|
|
$7.06
|
|
|
$5.25
|
|
|
$4.80
|
|
|
$4.71
|
|
|
View
|
|
|
$4.66
|
|
|
$4.65
|
|
Min.: 1
Mult.: 1
|
|
|
KE1xF
|
SMD/SMT
|
LQFP-100
|
ARM Cortex M4
|
256 kB
|
32 bit
|
12 bit
|
168 MHz
|
89 I/O
|
32 kB
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU Cortex M0+32K flash
- MKL02Z32VFG4
- NXP Semiconductors
-
1:
$2.94
-
2,211In Stock
|
Mouser Part No
841-MKL02Z32VFG4
|
NXP Semiconductors
|
ARM Microcontrollers - MCU Cortex M0+32K flash
|
|
2,211In Stock
|
|
|
$2.94
|
|
|
$2.20
|
|
|
$2.01
|
|
|
$1.81
|
|
|
View
|
|
|
$1.73
|
|
|
$1.64
|
|
|
$1.51
|
|
|
$1.48
|
|
|
$1.47
|
|
Min.: 1
Mult.: 1
|
|
|
KL0x
|
SMD/SMT
|
QFN-16
|
ARM Cortex M0+
|
32 kB
|
32 bit
|
12 bit
|
48 MHz
|
14 I/O
|
4 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU L0PB 24QFN 16K FLASH
- MKL03Z16VFK4R
- NXP Semiconductors
-
1:
$2.26
-
3,000In Stock
|
Mouser Part No
841-MKL03Z16VFK4R
|
NXP Semiconductors
|
ARM Microcontrollers - MCU L0PB 24QFN 16K FLASH
|
|
3,000In Stock
|
|
|
$2.26
|
|
|
$1.67
|
|
|
$1.54
|
|
|
$1.37
|
|
|
View
|
|
|
$1.13
|
|
|
$1.29
|
|
|
$1.24
|
|
|
$1.22
|
|
|
$1.13
|
|
Min.: 1
Mult.: 1
|
|
|
KL0x
|
SMD/SMT
|
QFN-24
|
ARM Cortex M0+
|
16 kB
|
32 bit
|
12 bit
|
48 MHz
|
22 I/O
|
2 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Reel, Cut Tape
|
|
|
|
ARM Microcontrollers - MCU 32KB Flash 48MHz QFP 48
- MKL05Z32VLF4R
- NXP Semiconductors
-
1:
$6.33
-
1,915In Stock
|
Mouser Part No
841-MKL05Z32VLF4R
|
NXP Semiconductors
|
ARM Microcontrollers - MCU 32KB Flash 48MHz QFP 48
|
|
1,915In Stock
|
|
|
$6.33
|
|
|
$4.54
|
|
|
$4.23
|
|
|
$3.72
|
|
|
View
|
|
|
$2.70
|
|
|
$3.54
|
|
|
$3.17
|
|
|
$2.91
|
|
|
$2.70
|
|
Min.: 1
Mult.: 1
|
|
|
KL0x
|
SMD/SMT
|
LQFP-48
|
ARM Cortex M0+
|
32 kB
|
32 bit
|
12 bit
|
48 MHz
|
41 I/O
|
4 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU Kinetis L ARM M0+ 32k Flash
- MKL14Z32VLK4
- NXP Semiconductors
-
1:
$9.91
-
480In Stock
|
Mouser Part No
841-MKL14Z32VLK4
|
NXP Semiconductors
|
ARM Microcontrollers - MCU Kinetis L ARM M0+ 32k Flash
|
|
480In Stock
|
|
|
$9.91
|
|
|
$7.43
|
|
|
$7.08
|
|
|
$4.97
|
|
|
View
|
|
|
$4.70
|
|
|
$4.68
|
|
Min.: 1
Mult.: 1
|
|
|
KL1x
|
SMD/SMT
|
LQFP-80
|
ARM Cortex M0+
|
32 kB
|
32 bit
|
12 bit
|
48 MHz
|
70 I/O
|
4 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU 64KBXFBGA 36
- MKL17Z64VDA4
- NXP Semiconductors
-
1:
$5.16
-
1,944In Stock
|
Mouser Part No
841-MKL17Z64VDA4
|
NXP Semiconductors
|
ARM Microcontrollers - MCU 64KBXFBGA 36
|
|
1,944In Stock
|
|
|
$5.16
|
|
|
$3.93
|
|
|
$3.63
|
|
|
$3.29
|
|
|
View
|
|
|
$3.02
|
|
|
$2.76
|
|
Min.: 1
Mult.: 1
|
|
|
KL1x
|
SMD/SMT
|
XFBGA-36
|
ARM Cortex M0+
|
64 kB
|
32 bit
|
16 bit
|
48 MHz
|
32 I/O
|
16 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU Kinetis L ARM M0+ 32k Flash
- MKL24Z32VLH4
- NXP Semiconductors
-
1:
$8.48
-
800In Stock
|
Mouser Part No
841-MKL24Z32VLH4
|
NXP Semiconductors
|
ARM Microcontrollers - MCU Kinetis L ARM M0+ 32k Flash
|
|
800In Stock
|
|
|
$8.48
|
|
|
$6.04
|
|
|
$5.76
|
|
|
$4.99
|
|
|
View
|
|
|
$4.77
|
|
|
$3.81
|
|
|
$3.79
|
|
|
$3.78
|
|
Min.: 1
Mult.: 1
|
|
|
KL2x
|
SMD/SMT
|
LQFP-64
|
ARM Cortex M0+
|
32 kB
|
32 bit
|
12 bit
|
48 MHz
|
50 I/O
|
4 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU CORTEX M0+ 128K FLASH
- MKL26Z128VFM4
- NXP Semiconductors
-
1:
$6.27
-
2,450In Stock
|
Mouser Part No
841-MKL26Z128VFM4
|
NXP Semiconductors
|
ARM Microcontrollers - MCU CORTEX M0+ 128K FLASH
|
|
2,450In Stock
|
|
|
$6.27
|
|
|
$4.80
|
|
|
$4.43
|
|
|
$4.02
|
|
|
View
|
|
|
$3.99
|
|
|
$3.68
|
|
|
$3.20
|
|
Min.: 1
Mult.: 1
|
|
|
KL2x
|
SMD/SMT
|
QFN-32
|
ARM Cortex M0+
|
128 kB
|
32 bit
|
16 bit
|
48 MHz
|
23 I/O
|
16 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU Kinetis L 32-bit MCU, ARM Cortex-M0+ core, 256KB Flash, 48MHz, USB, QFN 32
- MKL27Z256VFM4
- NXP Semiconductors
-
1:
$6.16
-
7,818In Stock
|
Mouser Part No
841-MKL27Z256VFM4
|
NXP Semiconductors
|
ARM Microcontrollers - MCU Kinetis L 32-bit MCU, ARM Cortex-M0+ core, 256KB Flash, 48MHz, USB, QFN 32
|
|
7,818In Stock
|
|
|
$6.16
|
|
|
$4.73
|
|
|
$4.54
|
|
|
$4.31
|
|
|
View
|
|
|
$4.30
|
|
|
$4.12
|
|
|
$4.04
|
|
|
$3.83
|
|
Min.: 1
Mult.: 1
|
|
|
KL2x
|
SMD/SMT
|
QFN-32
|
ARM Cortex M0+
|
256 kB
|
32 bit
|
16 bit
|
48 MHz
|
23 I/O
|
32 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU 256KBSegment LCD
- MKL43Z256VLH4
- NXP Semiconductors
-
1:
$5.79
-
550In Stock
|
Mouser Part No
841-MKL43Z256VLH4
|
NXP Semiconductors
|
ARM Microcontrollers - MCU 256KBSegment LCD
|
|
550In Stock
|
|
|
$5.79
|
|
|
$4.97
|
|
|
$4.77
|
|
|
$4.47
|
|
Min.: 1
Mult.: 1
|
|
|
KL4x
|
SMD/SMT
|
LQFP-64
|
ARM Cortex M0+
|
256 kB
|
32 bit
|
16 bit
|
48 MHz
|
50 I/O
|
32 kB
|
1.71 V
|
3.6 V
|
- 40 C
|
+ 105 C
|
|
Tray
|
|
South Africa