AT89LP6440-20PU Atmel, AT89LP6440-20PU Datasheet - Page 43

• Manufacturer Part Number: AT89LP6440-20PU
• Description: MCU 8051 64K FLASH ISP 40PDIP
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP6440-20PU

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 38
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 8K x 8
• Ram Size: 4.25K x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 9-6.
Table 9-7.
3706A–MICRO–9/09
Symbol
PSP
PCC
PGP
Symbol
IP1D
PCH
PT2H
PSH
PT1H
PX1H
PT0H
PX0H
Symbol
IP3D
PTWH
PADH
PSPH
PCCH
PGPH
IPH = B7H
Not Bit Addressable
Bit
IPH = B6H
Not Bit Addressable
Bit
Function
Serial Peripheral Interface Interrupt Priority Low
Compare/Capture Array Interrupt Priority Low
General-purpose Interrupt 0 Priority Low
Function
Interrupt Priority 1 Disable. Set IP1D to 1 to disable all interrupts with priority level one. Clear to 0 to enable all interrupts
with priority level one when EA = 1.
Comparator Interrupt Priority High
Timer 2 Interrupt Priority High
Serial Port Interrupt Priority High
Timer 1 Interrupt Priority High
External Interrupt 1 Priority High
Timer 0 Interrupt Priority High
External Interrupt 0 Priority High
Function
Interrupt Priority 3 Disable. Set IP3D to 1 to disable all interrupts with priority level three. Clear to 0 to enable all
interrupts with priority level three when EA = 1.
Two-Wire Interface Interrupt Priority High
ADC Interrupt Priority High
Serial Peripheral Interface Interrupt Priority High
Compare/Capture Array Interrupt Priority High
General-purpose Interrupt 0 Priority High
IPH – Interrupt Priority High Register
IP2H – Interrupt Priority 2 High Register
IP1D
IP3D
7
7
PCH
–
6
6
PT2H
5
–
5
PTWH
PSH
4
4
PADH
PT1H
3
3
AT89LP6440 - Preliminary
PSPH
PX1H
2
2
Reset Value = 0000 0000B
Reset Value = 0xxx x000B
PCCH
PT0H
1
1
PGPH
PX0H
0
0
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