AT89LP428-20MH Atmel, AT89LP428-20MH Datasheet - Page 75

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

Specifications of AT89LP428-20MH

• 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
• 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

Figure 15-1. GPI Block Diagram
.
Table 15-1.
3654A–MICRO–8/09
GPMOD = 9AH
Not Bit Addressable
Bit
(P1.7) GPI7
(P1.6) GPI6
(P1.5) GPI5
(P1.4) GPI4
(P1.3) GPI3
(P1.2) GPI2
(P1.1) GPI1
(P1.0) GPI0
GPMOD.x
GPMOD7
GPMOD
7
– General-purpose Interrupt Mode Register
0 = level-sensitive interrupt for P1.x
1 = edge-triggered interrupt for P1.x
GPMOD6
6
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
GPLS
7
6
5
4
3
2
1
0
GPMOD5
5
GPMOD
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
7
6
5
4
3
2
1
0
GPMOD4
4
7
6
5
4
3
2
1
0
GPIEN
CLK
GPMOD3
3
D Q
D Q
D Q
D Q
D Q
D Q
D Q
D Q
GPIF
GPMOD2
7
6
5
4
3
2
1
0
2
Reset Value = 0000 0000B
GPMOD1
AT89LP428/828
1
GPMOD0
Interrupt
0
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