AT89LP428 Atmel Corporation, AT89LP428 Datasheet - Page 83

• Manufacturer Part Number: AT89LP428
• Manufacturer: Atmel Corporation

Specifications of AT89LP428

• Flash (kbytes): 4 Kbytes
• Max. Operating Frequency: 25 MHz
• Cpu: 8051-1C
• Max I/o Pins: 30
• Spi: 1
• Uart: 1
• Sram (kbytes): 0.75
• Eeprom (bytes): 512
• Self Program Memory: IAP
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 3
• Isp: SPI/OCD
• Watchdog: Yes

Figure 16-1. Serial Port Mode 0
3654A–MICRO–8/09
SEND
SHIFT
RXD
TXD
TI
RI
RECEIVE
SHIFT
RXD
TXD
OVERFLOW
(SHIFT CLOCK)
(SHIFT CLOCK)
(DATA OUT)
(DATA IN)
TIMER 1
WRITE TO SBUF
WRITE TO SCON (CLEAR RI)
TB8
SMOD1
1
÷2
÷2
0
0
f
osc
1
“1“
INTERNAL BUS
INTERNAL BUS
SM2
AT89LP428/828
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