C8051F021 Silicon Laboratories Inc, C8051F021 Datasheet - Page 262
C8051F021
Manufacturer Part Number
C8051F021
Description
IC 8051 MCU 64K FLASH 64TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F02xr
Specifications of C8051F021
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
32
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
4.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x8b, 8x12b; D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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C8051F020/1/2/3
262
Bits 7-0: PCA0L: PCA0 Counter/Timer Low Byte.
Bits 7-0: PCA0H: PCA0 Counter/Timer High Byte.
R/W
R/W
Bit7
Bit7
The PCA0L register holds the low byte (LSB) of the 16-bit PCA0 Counter/Timer.
The PCA0H register holds the high byte (MSB) of the 16-bit PCA0 Counter/Timer.
R/W
R/W
Bit6
Bit6
Figure 23.14. PCA0H: PCA0 Counter/Timer High Byte
Figure 23.13. PCA0L: PCA0 Counter/Timer Low Byte
R/W
R/W
Bit5
Bit5
R/W
R/W
Bit4
Bit4
Rev. 1.4
R/W
R/W
Bit3
Bit3
R/W
R/W
Bit2
Bit2
R/W
R/W
Bit1
Bit1
R/W
R/W
Bit0
Bit0
SFR Address:
SFR Address:
00000000
00000000
Reset Value
Reset Value
0xE9
0xF9
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