AT89LP51ED2-20MU Atmel, AT89LP51ED2-20MU Datasheet - Page 70

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

Specifications of AT89LP51ED2-20MU

• Rohs: yes
• Core: 8051
• 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: VQFN-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
• Processor Series: AT89x
• Program Memory Type: Flash
• Factory Pack Quantity: 360

11.1
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Table 11-1.
Table 11-2.
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Table 11-3.
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Table 11-4.
70
KBMOD = 9FH
Not Bit Addressable
Bit
KBLS = 9CH
Not Bit Addressable
Bit
KBE = 9DH
Not Bit Addressable
Bit
KBF = 9EH
Not Bit Addressable
Bit
Registers
AT89LP51RD2/ED2/ID2 Preliminary
KBMOD.x
KBMOD7
KBMOD
KBLS
KBE
KBF
KBLS.x
KBLS7
KBE.x
KBF.x
KBE7
KBF7
7
7
7
7
– Keyboard Interrupt Flag Register
– Keyboard Interrupt Enable Register
– Keyboard Level Select Register
– Keyboard Mode Register
0 = level-sensitive interrupt for P1.x
1 = edge-triggered interrupt for P1.x
0 = detect low level or negative edge on P1.x
1 = detect high level or positive edge on P1.x
0 = interrupt for P1.x disabled
1 = interrupt for P1.x enabled
0 = interrupt on P1.x inactive
1 = interrupt on P1.x active. Must be cleared by software.
KBMOD6
KBLS6
KBE6
KBF6
6
6
6
6
KBMOD5
KBLS5
KBE5
KBF5
5
5
5
5
KBMOD4
KBLS4
KBE4
KBF4
4
4
4
4
KBMOD3
KBLS3
KBE3
KBF3
3
3
3
3
KBMOD2
KBLS2
KBE2
KBF2
2
2
2
2
Reset Value = 0000 0000B
Reset Value = 0000 0000B
Reset Value = 0000 0000B
Reset Value = 0000 0000B
KBMOD1
KBLS1
KBE1
KBF1
1
1
1
1
KBMOD0
KBLS0
KBE0
KBF0
3714A–MICRO–7/11
0
0
0
0