AT89LP428-20AU Atmel, AT89LP428-20AU Datasheet - Page 76

• Manufacturer Part Number: AT89LP428-20AU
• Description: MCU 8051 4K FLASH SPI 32TQFP
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP428-20AU

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 30
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFP, 32-VQFP
• Processor Series: AT89x
• Core: 8051
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: AT89ISP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Details

Table 15-2.
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Table 15-3.
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Table 15-4.
76
GPLS = 9BH
Not Bit Addressable
Bit
GPIEN = 9CH
Not Bit Addressable
Bit
GPIF = 9DH
Not Bit Addressable
Bit
AT89LP428/828
GPMOD.x
GPLS
GPIEN
GPIF
GPIEN.x
GPIEN7
GPLS7
GPIF7
GPIF.x
7
7
7
– General-purpose Interrupt Flag Register
– General-purpose Interrupt Level Select Register
– General-purpose Interrupt Enable Register
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.
GPIEN6
GPLS6
GPIF6
6
6
6
GPIEN5
GPLS5
GPIF5
5
5
5
GPIEN4
GPLS4
GPIF4
4
4
4
GPIEN3
GPLS3
GPIF3
3
3
3
GPIEN2
GPLS2
GPIF2
2
2
2
Reset Value = 0000 0000B
Reset Value = 0000 0000B
Reset Value = 0000 0000B
GPIEN1
GPLS1
GPIF1
1
1
1
GPIEN0
GPLS0
GPIF0
3654A–MICRO–8/09
0
0
0