AT89LP51ED2-20AU Atmel, AT89LP51ED2-20AU Datasheet - Page 178

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

Specifications of AT89LP51ED2-20AU

• 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: TQFP-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: 160

178
AT89LP51RD2/ED2/ID2 Preliminary
Table 22-1.
Notes:
SETB C
SETB bit
CPL C
CPL bit
ANL C, bit
ANL C, bit
ORL C, bit
ORL C, /bit
MOV C, bit
MOV bit, C
Branching
JC rel
JNC rel
JB bit, rel
JNB bit, rel
JBC bit, rel
JZ rel
JNZ rel
SJMP rel
ACALL addr11
LCALL addr16
RET
RETI
AJMP addr11
LJMP addr16
JMP @A+DPTR
JMP @A+PC
CJNE A, direct, rel
CJNE A, #data, rel
CJNE Rn, #data, rel
CJNE @Ri, #data, rel
CJNE A, @R0, rel
CJNE A, @R1, rel
DJNZ Rn, rel
DJNZ direct, rel
NOP
1. A clock cycle is one period of the output of the system clock divider. For Fast mode the divider
defaults to 1, so the clock cycle equals the oscillator period. For Compatibility mode the divider
(2)
Instruction Execution Times and Exceptions
(2)
(2)
Bytes
1
2
1
2
2
2
2
2
2
2
2
2
3
3
3
2
2
2
2
3
1
1
2
3
1
2
3
3
3
3
3
3
2
3
1
Compatibility
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
18
18
12
12
6
6
6
6
6
6
(1)
Clock Cycles
(Continued)
Fast
1
2
1
2
2
2
2
2
2
2
3
3
4
4
3
3
3
3
4
4
4
3
4
2
3
4
4
4
4
4
3
4
1
4
4
3714A–MICRO–7/11
11,31,51,71,91,
01,21,41,61,81,
Hex Code
A1,C1,E1
B1,D1,F1
D8-DF
B8-BF
B6-B7
A5 B6
A5 B7
A5 73
D3
D2
B3
B2
B0
A0
A2
B5
B4
D5
82
72
92
40
50
20
30
10
60
70
80
12
22
32
02
73
00