UPD78F9234MC-5A4-A Renesas Electronics America, UPD78F9234MC-5A4-A Datasheet - Page 234

• Manufacturer Part Number: UPD78F9234MC-5A4-A
• Description: MCU 8BIT 8KB FLASH 30PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9234MC-5A4-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

232
Address: FFEDH
Symbol
INTM1
Symbol
(4)
(5)
PSW
External interrupt mode register 1 (INTM1)
INTM1 is used to specify the valid edge for INTP3.
INTM1 is set with an 8-bit memory manipulation instruction.
Reset signal generation clears INTM1 to 00H.
Program status word (PSW)
The program status word is used to hold the instruction execution result and the current status of the interrupt
requests. The IE flag, used to enable and disable maskable interrupts, is mapped to PSW.
PSW can be read- and write-accessed in 8-bit units, as well as using bit manipulation instructions and
dedicated instructions (EI and DI). When a vectored interrupt is acknowledged, the PSW is automatically
saved to a stack, and the IE flag is reset to 0.
Generation of reset signal sets PSW to 02H.
Cautions 1. Be sure to clear bits 2 to 7 to 0.
ES31
IE
IE
7
0
0
0
1
1
7
0
1
Disabled
Enabled
After reset: 00H
Z
6
ES30
2. Before setting INTM1, set PMK3 to 1 to disable interrupts.
6
0
0
1
0
1
Figure 13-5. Format of External Interrupt Mode Register 1 (INTM1)
To enable interrupts, clear PIF3 to 0, then clear PMK3 to 0.
5
0
Falling edge
Rising edge
Setting prohibited
Both rising and falling edges
Figure 13-6. Program Status Word (PSW) Configuration
5
0
AC
4
R/W
3
0
CHAPTER 13 INTERRUPT FUNCTIONS
4
0
Whether to enable/disable interrupt acknowledgment
2
0
User’s Manual U17446EJ5V0UD
3
0
1
1
CY
2
0
0
INTP3 valid edge selection
ES31
After reset
Used in the execution of ordinary instructions
1
02H
ES30
0