AT89LP428 Atmel Corporation, AT89LP428 Datasheet - Page 33
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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Table 9-4.
Table 9-5.
3654A–MICRO–8/09
Symbol
IP1D
PCH
PT2H
PSH
PT1H
PX1H
PT0H
PX0H
Symbol
ESP
ECC
EGP
IPH = B7H
Not Bit Addressable
Bit
IE = B4H
Not Bit Addressable
Bit
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
Serial Peripheral Interface Interrupt Enable
Compare/Capture Array Interrupt Enable
General-purpose Interrupt Enable
IPH – Interrupt Priority High Register
IE2 – Interrupt Enable 2 Register
IP1D
7
–
7
PCH
6
–
6
PT2H
5
–
5
PSH
4
–
4
PT1H
3
–
3
PX1H
ESP
2
2
Reset Value = 0000 0000B
Reset Value = xxxx x000B
AT89LP428/828
PT0H
ECC
1
1
PX0H
EGP
0
0
33
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