AT89LP428 Atmel Corporation, AT89LP428 Datasheet - Page 34

• Manufacturer Part Number: AT89LP428
• Manufacturer: Atmel Corporation

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

Table 9-6.
Table 9-7.
34
Symbol
IP2D
PSP
PCC
PGP
Symbol
IP3D
PSPH
PCCH
PGPH
IP = B5H
No Bit Addressable
Bit
IP2H = B6H
Not Bit Addressable
Bit
AT89LP428/828
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.
Serial Peripheral Interface Interrupt Priority Low
Compare/Capture Array Interrupt Priority Low
General-purpose Interrupt 0 Priority Low
Function
Interrupt Priority 3 Disable. Set IP3D to 1 to disable all interrupts with priority level three. Clear to 0 to enable all
interrupts with priority level three when EA = 1.
Serial Peripheral Interface Interrupt Priority High
Compare/Capture Array Interrupt Priority High
General-purpose Interrupt 0 Priority High
IP2 – Interrupt Priority 2 Register
IP2H – Interrupt Priority 2 High Register
IP2D
IP3D
7
7
.
–
–
6
6
–
–
5
5
–
–
4
4
–
–
3
3
PSPH
PSP
2
2
Reset Value = 0xxx x000B
Reset Value = 0xxx x000B
PCCH
PCC
1
1
PGPH
3654A–MICRO–8/09
PGP
0
0