AT89LP6440-20PU Atmel, AT89LP6440-20PU Datasheet - Page 42

• 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 9-3.
Table 9-4.
Table 9-5.
42
Symbol
ETWI
EADC
ESPI
ECC
EGP
Symbol
IP0D
PC
PT2
PS
PT1
PX1
PT0
PX0
Symbol
IP2D
PTWI
PADC
IE = B4H
Not Bit Addressable
Bit
IP = B8H
Bit Addressable
Bit
IP = B5H
No Bit Addressable
Bit
AT89LP6440 - Preliminary
Function
Two-Wire Interface Interrupt Enable
ADC Interrupt Enable
Serial Peripheral Interface Interrupt Enable
Compare/Capture Array Interrupt Enable
General-purpose Interrupt Enable
Function
Interrupt Priority 0 Disable. Set IP0D to 1 to disable all interrupts with priority level zero. Clear to 0 to enable all interrupts
with priority level zero when EA = 1.
Comparator Interrupt Priority Low
Timer 2 Interrupt Priority Low
Serial Port Interrupt Priority Low
Timer 1 Interrupt Priority Low
External Interrupt 1 Priority Low
Timer 0 Interrupt Priority Low
External Interrupt 0 Priority Low
Function
Interrupt Priority 2 Disable. Set IP2D to 1 to disable all interrupts with priority level two. Clear to 0 to enable all interrupts
with priority level two when EA = 1.
Two-wire Interface Interrupt Priority Low
ADC Interrupt Priority Low
IE2 – Interrupt Enable 2 Register
IP – Interrupt Priority Register
IP2 – Interrupt Priority 2 Register
IP0D
IP2D
–
7
7
7
PC
–
6
6
–
6
PT2
–
5
5
–
5
PTWI
ETWI
PS
4
4
4
PADC
EADC
PT1
3
3
3
ESPI
PSP
PX1
2
2
2
Reset Value = 0000 0000B
Reset Value = 0xxx x000B
Reset Value = xxxx x000B
ECC
PCC
PT0
1
1
1
3706A–MICRO–9/09
EGP
PGP
PX0
0
0
0