UPD70F3738GF-GAS-AX Renesas Electronics America, UPD70F3738GF-GAS-AX Datasheet - Page 60

• 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: -

58
(1) Interrupt status saving registers (EIPC and EIPSW)
EIPSW
EIPC
EIPC and EIPSW are used to save the status when an interrupt occurs.
If a software exception or a maskable interrupt occurs, the contents of the program counter (PC) are saved to
EIPC, and the contents of the program status word (PSW) are saved to EIPSW (these contents are saved to
the NMI status saving registers (FEPC and FEPSW) if a non-maskable interrupt occurs).
The address of the instruction next to the instruction under execution, except some instructions (see 19.8
Periods in Which Interrupts Are Not Acknowledged by CPU), is saved to EIPC when a software exception
or a maskable interrupt occurs.
The current contents of the PSW are saved to EIPSW.
Because only one set of interrupt 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 EIPC and bits 31 to 8 of EIPSW are reserved for future function expansion (these bits are
always fixed to 0).
The value of EIPC is restored to the PC and the value of EIPSW to the PSW by the RETI instruction.
31
31
0
0
0
0
0 0 0 0
0 0 0 0
26 25
0
0
0 0 0 0
CHAPTER 3 CPU FUNCTION
User’s Manual U18953EJ5V0UD
0
0
0 0 0 0
(Contents of saved PC)
0
0
0 0 0 0
8 7
saved PSW)
(Contents of
0
0
(x: Undefined)
(x: Undefined)
Default value
Default value
000000xxH
0xxxxxxxH