AT89LP51 Atmel Corporation, AT89LP51 Datasheet - Page 90

• 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

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AT89LP51/52
Figure 17-13. ISP Byte Sequence
Figure 17-14. Serial Programming Interface Timing
Figure 17-15. Parallel Programming Interface Timing
MISO
MOSI
SCK
RST
SCK
OE
P0
RST
MOSI
MISO
SCK
t
t
SSE
t
SSE
PIS
7
7
t
PIH
t
t
SHSL
SHSL
t
t
t
SCK
POE
SCK
6
6
Data Sampled
t
t
t
SLSH
t
SLSH
SR
SR
5
5
t
SOV
4
4
t
SOH
t
POV
3
3
t
t
t
SF
POH
SF
t
SIS
2
2
t
SIH
1
1
t
t
SSD
SSD
3709D–MICRO–12/11
t
t
POX
SOX
0
0