UPD70F3451GC-UBT-A Renesas Electronics America, UPD70F3451GC-UBT-A Datasheet - Page 991

• Manufacturer Part Number: UPD70F3451GC-UBT-A
• Description: MCU 32BIT 128KB FLASH 80LQFP
• Manufacturer: Renesas Electronics America
• Series: V850E/Ix3r

Specifications of UPD70F3451GC-UBT-A

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 64MHz
• Connectivity: CSI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 44
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 5.5 V
• Data Converters: A/D 10x12b, 4x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

20.2.1 Operation
transfers control to the handler routine.
If a non-maskable interrupt request signal (INTWDT) is generated, the CPU performs the following processing, and
(1) Saves the restored PC to FEPC.
(2) Saves the current PSW to FEPSW.
(3) Writes the exception code (0010H) to the higher halfword (FECC) of ECR.
(4) Sets the PSW.NP and PSW.ID bits (1) and clears the PSW.EP bit (0).
(5) Loads the handler address (00000010H) of the non-maskable interrupt routine to the PC, and transfers control.
The following shows the non-maskable interrupt servicing.
INTC acknowledged
CPU processing
CHAPTER 20 INTERRUPT/EXCEPTION PROCESSING FUNCTION
Figure 20-1. Non-Maskable Interrupt Servicing
Non-maskable interrupt request
FEPC
FEPSW
ECR. FECC
PSW. NP
PSW. EP
PSW. ID
PC
Interrupt servicing
INTWDT input
PSW. NP
User’s Manual U18279EJ3V0UD
0
Restored PC
PSW
Exception code
1
0
1
00000010H
1
Interrupt request pending
989