AT89C51ID2 Atmel Corporation, AT89C51ID2 Datasheet - Page 149

• Manufacturer Part Number: AT89C51ID2
• Manufacturer: Atmel Corporation

Specifications of AT89C51ID2

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Sram (kbytes): 2
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

AC Testing Input/Output
Waveforms
Float Waveforms
Clock Waveforms
149
AT89C51ID2
AC inputs during testing are driven at V
Timing measurement are made at V
For timing purposes as port pin is no longer floating when a 100 mV change from load
voltage occurs and begins to float when a 100 mV change from the loaded V
occurs. I
Valid in normal clock mode. In X2 mode XTAL2 must be changed to XTAL2/2.
INPUT/OUTPUT
OL
/I
OH
≥ ± 20 mA.
V
CC
V
V
OH
OL
0.45V
-0.5V
+ 0.1V
- 0.1V
IH
FLOAT
min for a logic “1” and V
V
CC
LOAD
- 0.5 for a logic “1” and 0.45V for a logic “0”.
0.2 V
0.2 V
CC
CC
+ 0.9
- 0.1
V
V
LOAD
LOAD
IL
max for a logic “0”.
+ 0.1V
- 0.1V
4289C–8051–11/05
OH
/V
OL
level