AT89LP428 Atmel Corporation, AT89LP428 Datasheet - Page 75
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AT89LP428
Manufacturer Part Number
AT89LP428
Description
Manufacturer
Atmel Corporation
Datasheet
1.AT89LP428.pdf
(149 pages)
Specifications of AT89LP428
Flash (kbytes)
4 Kbytes
Max. Operating Frequency
25 MHz
Cpu
8051-1C
Max I/o Pins
30
Spi
1
Uart
1
Sram (kbytes)
0.75
Eeprom (bytes)
512
Self Program Memory
IAP
Operating Voltage (vcc)
2.4 to 5.5
Timers
3
Isp
SPI/OCD
Watchdog
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89LP428-20AU
Manufacturer:
RFMD
Quantity:
1 240
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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
75
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