UPD70F3738GF-GAS-AX Renesas Electronics America, UPD70F3738GF-GAS-AX Datasheet - Page 815

• Manufacturer Part Number: UPD70F3738GF-GAS-AX
• Description: MCU 32BIT V850ES/JX3-L 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Lr

Specifications of UPD70F3738GF-GAS-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 84
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

21.6 Multiple Interrupt Servicing Control
higher priority level is generated. The higher priority interrupt request signal is then acknowledged and the interrupt is
serviced.
newly generated interrupt request signal will be held pending.
service routine, multiple interrupt control must be performed while interrupts are enabled (ID bit = 0). If a maskable
interrupt or software exception occurs in a maskable interrupt or software exception service program, EIPC and
EIPSW must be saved.
In multiple interrupt servicing control, the servicing of an interrupt is stopped if an interrupt request signal that has a
If an interrupt request signal with a lower or equal priority level is generated while an interrupt is being serviced, the
Multiple interrupt servicing control is performed when interrupts are enabled (PSW.ID bit = 0). Even in an interrupt
The following example shows the procedure for servicing multiple interrupts.
(1) To acknowledge maskable interrupt request signals in a service program
Service program for maskable interrupt or exception
• EIPC saved to memory or register
• EIPSW saved to memory or register
• EI instruction (enables interrupt acknowledgment)
• DI instruction (disables interrupt acknowledgment)
• Saved value restored to EIPSW
• Saved value restored to EIPC
• RETI instruction
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CHAPTER 21 INTERRUPT SERVICING/EXCEPTION PROCESSING FUNCTION
User’s Manual U18953EJ5V0UD
←Acknowledges maskable interrupt
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