AT89LP51 Atmel Corporation, AT89LP51 Datasheet - Page 98

• Manufacturer Part Number: AT89LP51
• Manufacturer: Atmel Corporation

Specifications of AT89LP51

• Flash (kbytes): 4 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 36
• Uart: 1
• Sram (kbytes): 0.25
• Eeprom (bytes): 256
• Self Program Memory: IAP
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 3
• Isp: SPI
• Watchdog: Yes

18.3.4
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AT89LP51/52
Quasi-Bidirectional Output
Figure 18-7. Quasi-Bidirectional Output I-V Source Characteristic at 5V
Figure 18-8. Quasi-Bidirectional Output I-V Source Characteristic at 3V
-100
-120
-140
-20
-40
-60
-80
-10
-20
-30
-40
-50
-60
-70
0
0
1.0
1
1.5
2
V
V
OH
OH
2.0
3
(V)
(V)
2.5
4
3.0
5
3709D–MICRO–12/11
85C
-40C
25C
85C
-40C
25C