AT89LP51 Atmel Corporation, AT89LP51 Datasheet - Page 65

• 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

Figure 14-3. Serial Port Mode 0 (Two-Wire)
3709D–MICRO–12/11
SEND
SHIFT
RXD
TXD
TI
RI
RECEIVE
SHIFT
RXD
TXD
O VERF L O W
(SHIFT CLOCK)
(SHIFT CLOCK)
( D A T A OUT )
( D A T A IN )
TIMER 1
WRITE T O S B U F
WRITE T O SCON (CLEAR RI )
TB8
SMOD1
1
÷2
÷2
0
0
f
sys
1
“1“
INTERNAL B U S
INTERNAL B U S
SM2
AT89LP51/52
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