T89C51RD2-SLSIM Atmel, T89C51RD2-SLSIM Datasheet - Page 22

• Manufacturer Part Number: T89C51RD2-SLSIM
• Description: IC MICRO CTRL 64K FLASH 44PLCC
• Manufacturer: Atmel
• Series: 89Cr

Specifications of T89C51RD2-SLSIM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

22
T89C51RD2
Table 9. T2MOD Register
T2MOD - Timer 2 Mode Control Register (C9h)
Reset Value = XXXX XX00b
Not bit addressable
Number
Bit
7
6
5
4
3
2
1
0
7
-
Mnemonic
DCEN
T2OE
Bit
-
-
-
-
-
-
6
-
Description
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Timer 2 Output Enable bit
Clear to program P1.0/T2 as clock input or I/O port.
Set to program P1.0/T2 as clock output.
Down Counter Enable bit
Clear to disable timer 2 as up/down counter.
Set to enable timer 2 as up/down counter.
5
-
4
-
3
-
2
-
T2OE
1
4243G–8051–05/03
DCEN
0