AT89C51CC03C-S3RIM Atmel, AT89C51CC03C-S3RIM Datasheet - Page 73

• Manufacturer Part Number: AT89C51CC03C-S3RIM
• Description: IC 8051 MCU FLASH 64K 52PLCC
• Manufacturer: Atmel
• Series: AT89C CANr

Specifications of AT89C51CC03C-S3RIM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, 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: 52-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: AT89C51CC03CS3RTR

4182O–CAN–09/08
Table 31. TMOD Register
TMOD (S:89h)
Timer/Counter Mode Control Register
1.
2.
Reset Value = 0000 0000b
Number
GATE1
Bit
7
7
6
5
4
3
2
1
0
Reloaded from TH1 at overflow.
Reloaded from TH0 at overflow.
Mnemonic Description
C/T1#
GATE1
GATE0
C/T1#
C/T0#
M01
M10
M00
M11
Bit
6
Timer 1 Gating Control Bit
Clear to enable Timer 1 whenever TR1 bit is set.
Set to enable Timer 1 only while INT1# pin is high and TR1 bit is set.
Timer 1 Counter/Timer Select Bit
Clear for Timer operation: Timer 1 counts the divided-down system clock.
Set for Counter operation: Timer 1 counts negative transitions on external pin T1.
Timer 1 Mode Select Bits
M11 M01
Timer 0 Gating Control Bit
Clear to enable Timer 0 whenever TR0 bit is set.
Set to enable Timer/Counter 0 only while INT0# pin is high and TR0 bit is set.
Timer 0 Counter/Timer Select Bit
Clear for Timer operation: Timer 0 counts the divided-down system clock.
Set for Counter operation: Timer 0 counts negative transitions on external pin T0.
Timer 0 Mode Select Bit
M10 M00
TH0 is an 8-bit Timer using Timer 1’s TR0 and TF0 bits.
0
0
1
1
0
0
1
1
M11
5
0
1
0
1
0
1
0
1
Operating mode
Mode 0: 8-bit Timer/Counter (TH1) with 5-bit prescaler (TL1).
Mode 1: 16-bit Timer/Counter.
Mode 2: 8-bit auto-reload Timer/Counter (TL1)
Mode 3: Timer 1 halted. Retains count
Operating mode
Mode 0: 8-bit Timer/Counter (TH0) with 5-bit prescaler (TL0).
Mode 1: 16-bit Timer/Counter.
Mode 2: 8-bit auto-reload Timer/Counter (TL0)
Mode 3: TL0 is an 8-bit Timer/Counter
M01
4
GATE0
3
C/T0#
AT89C51CC03
2
M10
1
(1)
(2)
M00
0
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