UPD70F3745GJ-GAE-AX Renesas Electronics America, UPD70F3745GJ-GAE-AX Datasheet - Page 49
UPD70F3745GJ-GAE-AX
Manufacturer Part Number
UPD70F3745GJ-GAE-AX
Description
MCU 32BIT V850ES/JX3 144-LQFP
Manufacturer
Renesas Electronics America
Series
V850ES/Jx3r
Datasheet
1.UPD70F3743GJ-GAE-AX.pdf
(911 pages)
Specifications of UPD70F3745GJ-GAE-AX
Core Processor
RISC
Core Size
32-Bit
Speed
32MHz
Connectivity
CSI, EBI/EMI, I²C, UART/USART
Peripherals
DMA, LVD, PWM, WDT
Number Of I /o
128
Program Memory Size
768KB (768K x 8)
Program Memory Type
FLASH
Ram Size
60K x 8
Voltage - Supply (vcc/vdd)
2.85 V ~ 3.6 V
Data Converters
A/D 16x10b; 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
-
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V850ES/JJ3
R01UH0016EJ0400 Rev.4.00
Sep 30, 2010
(2) NMI status saving registers (FEPC and FEPSW)
(3) Interrupt source register (ECR)
31 to 16
15 to 0
Bit position
FEPC and FEPSW are used to save the status when a non-maskable interrupt (NMI) occurs.
If an NMI occurs, the contents of the program counter (PC) are saved to FEPC, and those of the program status
word (PSW) are saved to FEPSW.
The address of the instruction next to the one of the instruction under execution, except some instructions, is saved
to FEPC when an NMI occurs.
The current contents of the PSW are saved to FEPSW.
Because only one set of NMI status saving registers is available, the contents of these registers must be saved by
program when multiple interrupts are enabled.
Bits 31 to 26 of FEPC and bits 31 to 8 of FEPSW are reserved for future function expansion (these bits are always
fixed to 0).
The value of FEPC is restored to the PC and the value of FEPSW to the PSW by the RETI instruction.
FEPSW
The interrupt source register (ECR) holds the source of an exception or interrupt if an exception or interrupt occurs.
This register holds the exception code of each interrupt source. Because this register is a read-only register, data
cannot be written to this register using the LDSR instruction.
FEPC
ECR
31
31
31
0
0
FECC
EICC
0
0
Bit name
0 0 0 0
0 0 0 0
26 25
Exception code of exception or maskable interrupt
Exception code of non-maskable interrupt (NMI)
0
FECC
0
0 0 0 0
0
0
0 0 0 0
16 15
(Saved PC contents)
0
0
0 0 0 0
Meaning
EICC
8 7
(Saved PSW
contents)
CHAPTER 3 CPU FUNCTION
0
0
0
Default value
00000000H
(x: Undefined)
(x: Undefined)
Default value
Default value
000000xxH
0xxxxxxxH
Page 33 of 892
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