UPD70F3738GF-GAS-AX Renesas Electronics America, UPD70F3738GF-GAS-AX Datasheet - Page 453

• 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: -

(2) Prescaler compare register 0 (PRSCM0)
Cautions 1. Do not rewrite the PRSCM0 register during watch timer operation.
The PRSCM0 register is an 8-bit compare register.
This register can be read or written in 8-bit units.
Reset sets this register to 00H.
The calculation for f
Remark f
f
BRG
2. Set the PRSCM0 register before setting the PRSM0.BGCE0 bit to 1.
3. Set the PRSM0 and PRSCM0 registers according to the main clock frequency that is used
PRSCM0
= f
so as to obtain an f
BGCS
N:
After reset: 00H
BGCS
/2N
: Watch timer source clock set by the PRSM0 register
Set value of the PRSCM0 register = 1 to 256
However, N = 256 when the PRSCM0 register is set to 00H.
PRSCM07
BRG
is shown below.
PRSCM06 PRSCM05 PRSCM04 PRSCM03 PRSCM02 PRSCM01 PRSCM00
R/W
BRG
frequency of 32.768 kHz.
CHAPTER 10 WATCH TIMER
Address: FFFFF8B1H
User’s Manual U18953EJ5V0UD
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