UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 223

• Manufacturer Part Number: UPD78F9222MC(T)-5A4-A
• Description: 8BIT MCU, 4K FLASH, 256B RAM, 78F9222
• Manufacturer: NEC

Specifications of UPD78F9222MC(T)-5A4-A

• Controller Family/series: UPD78
• No. Of I/o's: 17
• Ram Memory Size: 256Byte
• Cpu Speed: 10MHz
• No. Of Timers: 4
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

Address: FFECH
Symbol
INTM0
(3)
External interrupt mode register 0 (INTM0)
This register is used to set the valid edge of INTP0 to INTP2.
INTM0 is set with an 8-bit memory manipulation instruction.
Reset signal generation clears INTM0 to 00H.
Cautions 1. Be sure to clear bits 0 and 1 to 0.
ES21
ES21
ES11
ES01
7
0
0
1
1
0
0
1
1
0
0
1
1
After reset: 00H
ES20
ES20
ES10
ES00
2. Before setting the INTM0 register, be sure to set the corresponding interrupt mask flag
6
0
1
0
1
0
1
0
1
0
1
0
1
Figure 12-4. Format of External Interrupt Mode Register 0 (INTM0)
(××MK× = 1) to disable interrupts. After setting the INTM0 register, clear the interrupt
request flag (××IF× = 0), then clear the interrupt mask flag (××MK× = 0), which will
enable interrupts.
Falling edge
Rising edge
Setting prohibited
Both rising and falling edges
Falling edge
Rising edge
Setting prohibited
Both rising and falling edges
Falling edge
Rising edge
Setting prohibited
Both rising and falling edges
ES11
5
R/W
ES10
CHAPTER 12 INTERRUPT FUNCTIONS
4
User’s Manual U16898EJ5V0UD
ES01
3
ES00
2
INTP2 valid edge selection
INTP1 valid edge selection
INTP0 valid edge selection
1
0
0
0
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