AT89LP51 Atmel Corporation, AT89LP51 Datasheet - Page 21
AT89LP51
Manufacturer Part Number
AT89LP51
Description
Manufacturer
Atmel Corporation
Datasheet
1.AT89LP51.pdf
(117 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89LP51-20JU
Manufacturer:
Atmel
Quantity:
44
Company:
Part Number:
AT89LP51-20PU
Manufacturer:
TI
Quantity:
183
Company:
Part Number:
AT89LP51RD2-20AAU
Manufacturer:
INFINEON
Quantity:
450
3709D–MICRO–12/11
Figure 3-13. Fast Mode External Data Memory Read Cycle (WS = 00B)
Figure 3-14. Compatibility Mode External Data Memory Write Cycle (WS0 = 0)
Figure 3-15. Compatibility Mode External Data Memory Read Cycle (WS0 = 0)
CLK
ALE
RD
CLK
ALE
P0
P2
WR
CLK
ALE
P0
P2
RD
P0
P2
P0 SFR
P2 SFR
PCH or
P0 SFR
P2 SFR
PCH or
S4
S4
P0 SFR
P2 SFR
S1
DPL or Ri
DPL or Ri
S5
OUT
S5
OUT
DPL or Ri OUT
S6
S6
S2
S1
DATA SAMPLED
DPH or P2 OUT
S1
DPH or P2 OUT
DATA OUT
DATA SAMPLED
DPH or P2 OUT
S2
FLOAT
S2
S3
FLOAT
S3
S3
S4
S4
S4
AT89LP51/52
P2 SFR
PCH or
P0 SFR
PCL or
S5
S5
P0 SFR
P2 SFR
PCH or
PCL or
P0 SFR
P2 SFR
21