UPD70F3738GF-GAS-AX Renesas Electronics America, UPD70F3738GF-GAS-AX Datasheet - Page 464

• 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: -

11.3 Registers
462
The real-time counter is controlled by the following 18 registers.
(1) Real-time counter control register 0 (RC1CC0)
(2) Real-time counter control register 1 (RC1CC1)
The RC1CC0 register selects the real-time counter input clock.
This register can be read or written in 8-bit or 1-bit units.
Reset sets this register to 00H.
Cautions 1. Follow the description in 11.4.8 Initializing real-time counter when stopping (RC1PWR
The RC1CC1 register is an 8-bit register that starts or stops the real-time counter, controls the RTCCL and
RTC1HZ pins, selects the 12-hour or 24-hour system, and sets the fixed-cycle interrupt function.
This register can be read or written in 8-bit or 1-bit units.
Reset sets this register to 00H.
Note
RC1CC0
Be sure to clear RC1CKS bit to 0 in the RTC backup mode (RTCBUMCTL0.RBMSET = 1).
For detail, see 23.9 RTC backup mode (
2. The RC1CKS bit can be rewritten only when the real-time counter is stopped
After reset: 00H
= 1 → 0) the real-time counter while it is operating.
(RC1PWR bit = 0). Furthermore, rewriting the RC1CKS bit at the same time as setting
the RC1PWR bit from 0 to 1 is prohibited.
RC1CKS
RC1PWR
RC1PWR
CHAPTER 11 REAL-TIME COUNTER (
7
0
1
0
1
Note
RC1CKS
Stops real-time counter operation.
Enables real-time counter operation.
Selects f
Selects f
R/W
6
Note
XT
BRG
User’s Manual U18953EJ5V0UD
as operation clock.
Address: FFFFFADDH
as operation clock.
5
0
Real-time counter operation control
Operation clock selection
μ
4
0
PD70F3792, 70F3793).
3
0
PD70F3792, 70F3793)
2
0
1
0
0
0