AT89C51AC3-RDTIM Atmel, AT89C51AC3-RDTIM Datasheet - Page 104
AT89C51AC3-RDTIM
Manufacturer Part Number
AT89C51AC3-RDTIM
Description
IC 8051 MCU FLASH 64K 64VQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51AC3-RLTUM.pdf
(140 pages)
Specifications of AT89C51AC3-RDTIM
Core Processor
8051
Core Size
8-Bit
Speed
60MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
36
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
2.25K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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AT89C51AC3
Table 55. CH Register
CH (S:F9h)
PCA Counter Register High Value
Reset Value = 0000 00000b
Table 56. CL Register
CL (S:E9h)
PCA counter Register Low Value
Reset Value = 0000 00000b
Number
Number
CH 7
CL 7
Bit
Bit
7:0
7:0
7
7
Mnemonic Description
Mnemonic Description
CL0 7:0
CH 7:0
CH 6
CL 6
Bit
Bit
6
6
High byte of Timer/Counter
Low byte of Timer/Counter
CH 5
CL 5
5
5
CH 4
CL 4
4
4
CH 3
CL 3
3
3
CH 2
CL 2
2
2
4383D–8051–02/08
CH 1
CL 1
1
1
CH 0
CL 0
0
0
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