T89C51RD2-SLSIM Atmel, T89C51RD2-SLSIM Datasheet - Page 52

• 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: -

52
T89C51RD2
Table 33. EETIM Register
EETIM (S:0D3h)
EEPROM timing Control Register
Reset Value = 0000 0000b
Bit Number
7-0
7
Mnemonic
EETIM
6
Bit
Description
Write Timer Register
The write timer register value is required to adapt the write time to the oscillator
frequency
Value = 5 * Fxtal (MHz) in normal mode, 10 * Fxtal in X2 mode.
Example : Fxtal = 33 MHZ, EETIM = 0A5h
5
4
EETIM
3
2
1
4243G–8051–05/03
0