UPD70F3738GF-GAS-AX Renesas Electronics America, UPD70F3738GF-GAS-AX Datasheet - Page 807

• 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: -

21.3.7 ID flag
disable flag (ID) is assigned to the PSW.
21.3.8 Watchdog timer mode register 2 (WDTM2)
This flag stores information regarding enabling or disabling maskable interrupt request signals. The interrupt
Reset sets this flag to 1 and the PSW register to 00000020H.
This register can be read or written in 8-bit units (for details, see CHAPTER 12 WATCHDOG TIMER 2).
Reset sets this register to 67H.
Note Interrupt disable flag (ID) function
After reset:
PSW
This bit is set to 1 by the DI instruction and cleared to 0 by the EI instruction. Its value is also rewritten by
the RETI instruction, or by an LDSR instruction that writes data to the PSW.
Non-maskable interrupt request signals and exceptions are acknowledged regardless of this flag. When
a maskable interrupt request signal is acknowledged, the ID flag is automatically set to 1 by hardware.
An interrupt request signal generated during the acknowledgment disabled period (ID flag = 1) is
acknowledged when the xxICn.xxIFn bit is set to 1, and the ID flag is cleared to 0.
WDTM2
00000020H
After reset: 67H
CHAPTER 21 INTERRUPT SERVICING/EXCEPTION PROCESSING FUNCTION
ID
0
1
WDM21
0
0
1
0
Maskable interrupt request signal acknowledgment enabled
Maskable interrupt request signal acknowledgment disabled
WDM20
WDM21
R/W
0
1
×
0
Address: FFFFF6D0H
Stops operating
Non-maskable interrupt request mode
Reset mode (initial-value
WDM20
User’s Manual U18953EJ5V0UD
Specification of maskable interrupt servicing
Selection of watchdog timer operation mode
0
0
NP EP
0
ID
SAT CY OV
0
Note
0
S
Z
805