AT89LP51ED2-20JU Atmel, AT89LP51ED2-20JU Datasheet - Page 20

• Manufacturer Part Number: AT89LP51ED2-20JU
• Description: 8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
• Manufacturer: Atmel

Specifications of AT89LP51ED2-20JU

• Rohs: yes
• Core: 8051
• Processor Series: AT89x
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 256 B
• On-chip Adc: Yes
• Operating Supply Voltage: 2.4 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: PLCC-44
• Mounting Style: SMD/SMT
• Data Rom Size: 4 KB
• Interface Type: 2-Wire, SPI, UART
• Number Of Programmable I/os: 36
• Number Of Timers: 3
• Program Memory Type: Flash
• Factory Pack Quantity: 27

20
AT89LP51RD2/ED2/ID2 Preliminary
Figure 3-9.
Figure 3-10.
Figure 3-11. Compatibility Mode External Data Memory Write Cycle (WS0 = 0)
CLK
CLK
ALE
ALE
WR
RD
CLK
ALE
P0
P2
P0
P2
WR
P0
P2
Fast Mode External Data Memory Write Cycle (WS = 00B)
Fast Mode External Data Memory Read Cycle (WS = 00B)
P0 SFR
P2 SFR
PCH or
S4
P0 SFR
P2 SFR
P0 SFR
P2 SFR
S1
S1
DPL or Ri
OUT
S5
DPL or Ri OUT
DPL or Ri OUT
S6
S2
S2
S1
DPH or P2 OUT
DATA OUT
DATA SAMPLED
DPH or P2 OUT
DPH or P2 OUT
S2
S3
S3
FLOAT
S3
DATA OUT
S4
S4
S4
P2 SFR
PCH or
P0 SFR
PCL or
S5
3714A–MICRO–7/11
P0 SFR
P2 SFR
P0 SFR
P2 SFR