UPD70F3747GB-GAH-AX Renesas Electronics America, UPD70F3747GB-GAH-AX Datasheet - Page 834
UPD70F3747GB-GAH-AX
Manufacturer Part Number
UPD70F3747GB-GAH-AX
Description
MCU 32BIT V850ES/HX3 64-LQFP
Manufacturer
Renesas Electronics America
Series
V850ES/Hx3r
Datasheet
1.UPD70F3747GB-GAH-AX.pdf
(1106 pages)
Specifications of UPD70F3747GB-GAH-AX
Core Processor
RISC
Core Size
32-Bit
Speed
32MHz
Connectivity
CSI, I²C, UART/USART
Peripherals
DMA, LVD, PWM, WDT
Number Of I /o
51
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
3.7 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UPD70F3747GB-GAH-AX
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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18.2.2 Restore
832
(1) From NMI pin input
Caution When the EP and NP bits are changed by the LDSR instruction during non-maskable interrupt
Remark
Execution is restored from the NMI servicing by the RETI instruction.
When the RETI instruction is executed, the CPU performs the following processing, and transfers control to the
address of the restored PC.
<1> Loads the restored PC and PSW from FEPC and FEPSW, respectively, because the PSW.EP bit is 0 and
<2> Transfers control back to the address of the restored PC and PSW.
Figure 18-3 illustrates how the RETI instruction is processed.
the PSW.NP bit is 1.
servicing, in order to restore the PC and PSW correctly during restoration by the RETI
instruction, it is necessary to set the EP bit back to 0 and the NP bit back to 1 using the LDSR
instruction immediately before the RETI instruction.
The solid line shows the CPU processing flow.
1
CHAPTER 18 INTERRUPT/EXCEPTION PROCESSING FUNCTION
Original processing restored
PC
PSW
RETI instruction
Figure 18-3. RETI Instruction Processing
PSW.EP
PSW.NP
0
0
EIPC
EIPSW
User’s Manual U18854EJ2V0UD
1
PC
PSW
FEPC
FEPSW
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