UPD70F3737GF-GAS-AX Renesas Electronics America, UPD70F3737GF-GAS-AX Datasheet - Page 793

• Manufacturer Part Number: UPD70F3737GF-GAS-AX
• Description: MCU 32BIT V850ES/JX3-L 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Lr

Specifications of UPD70F3737GF-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: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K 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: -

21.2.3 NP flag
interrupt requests to prohibit multiple interrupts from being acknowledged.
(2) From INTWDT2 signal
The NP flag is a status flag that indicates that a non-maskable interrupt is being serviced.
This flag is set when a non-maskable interrupt request signal has been acknowledged, and masks non-maskable
Non-maskable interrupt servicing executed by INTWDT2 cannot be returned from by using the RETI
instruction. To return from such servicing, execute the following software reset processing.
In the software reset processing, however, the registers that can be set up only once immediately after a reset
ends (such as the WDTM2 register) cannot be set up again. To reset these registers to their initial statuses, a
hardware reset such as reset pin input is required.
PSW
NP
CHAPTER 21 INTERRUPT SERVICING/EXCEPTION PROCESSING FUNCTION
FEPSW ← Value that sets NP bit = 1, EP bit = 0
0
1
FEPC ← Software reset processing address
PSW ← PSW default value setting
No non-maskable interrupt servicing (initial value)
Non-maskable interrupt currently being serviced
INTWDT2 occurs.
RETI 10 times
Initialization
Figure 21-4. Software Reset Processing
RETI
↓
↓
↓
0
User’s Manual U18953EJ5V0UD
Non-maskable interrupt servicing status
INTWDT2 service routine
Software reset processing routine
NP
EP
ID SAT CY OV
S
Z
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