UPD70F3738GF-GAS-AX Renesas Electronics America, UPD70F3738GF-GAS-AX Datasheet - Page 860

• 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: -

858
(1) RTC backup control register 0 (RTCBUMCTL0)
Cautions1.
The RTCBUMCTL0 register is the register that controls RTC backup mode. This register is a special register
that can only be written in a specific sequence (see 3.4.7 Special registers).
This register can be read or written in 8-bit or 1-bit units.
This register is cleared to 00H when a power-on reset operation is executed for RV
RTCBUMCTL0
2.
Do not set the RBMEN and RBMSET bits (to 1) at the same time. If they are set (to 1) at
the same time, the RTC backup mode might not operate correctly. Set the RBMEN bit
(to 1) first, and then set the RBMSET bit (to 1).
Do not set the RBMSET bit (to 1) while the RBMEN bit is 0.
If the RBMSET bit is set (to 1) at this time, the bit is set (to 1), but the RTC backup mode
is not specified.
After reset: 00H
RBMSET
RBMEN
RBMEN
<7>
0
1
0
1
Setting the RTC backup mode
When the RBMSET bit is set (to 1), switch the RTC status to the following.
Using RTC backup mode is disabled
Using RTC backup mode is enabled
Exiting the RTC backup mode
R/W
• Select the division clock of subclock (f
• RTC interrupt function stop
• RTC pin output function stop
• RTC time error correction function stop
CHAPTER 23 STANDBY FUNCTION
6
0
User’s Manual U18953EJ5V0UD
Address:
0
5
RTC backup mode setting
RTC backup mode control
FFFFFB00H
4
0
3
0
XT
) as RTC input clock
2
0
DD
1
0
.
RBMSET
<0>