UPD70F3737GC-UEU-AX Renesas Electronics America, UPD70F3737GC-UEU-AX Datasheet - Page 405

• Manufacturer Part Number: UPD70F3737GC-UEU-AX
• Description: MCU 32BIT V850ES/JX3-L 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Lr

Specifications of UPD70F3737GC-UEU-AX

• Package / Case: *
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 20MHz
• Number Of I /o: 84
• Core Processor: RISC
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Program Memory Size: 128KB (128K x 8)
• Data Converters: A/D 12x10b, D/A 2x8b
• Oscillator Type: Internal
• Peripherals: DMA, LVD, PWM, WDT
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Core Size: 32-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

10.3 Control Registers
The following registers are provided for the watch timer.
• Prescaler mode register 0 (PRSM0)
• Prescaler compare register 0 (PRSCM0)
• Watch timer operation mode register (WTM)
(1) Prescaler mode register 0 (PRSM0)
Cautions 1. Do not change the values of the BGCS00 and BGCS01 bits during watch timer operation.
The PRSM0 register controls the generation of the watch timer count clock.
This register can be read or written in 8-bit or 1-bit units.
Reset sets this register to 00H.
2. Set the PRSM0 register before setting the BGCE0 bit to 1.
3. Set the PRSM0 and PRSCM0 registers according to the main clock frequency that is used
PRSM0
so as to obtain an f
After reset: 00H
BGCS01
BGCE0
0
1
0
0
1
1
0
BGCS00
Disabled
Enabled
R/W
CHAPTER 10 WATCH TIMER FUNCTIONS
BRG
0
1
0
1
0
Preliminary User’s Manual U18953EJ1V0UD
frequency of 32.768 kHz.
Address: FFFFF8B0H
f
f
f
f
X
X
X
X
/2
/4
/8
0
Selection of watch timer source clock (f
Main clock operation enable
BGCE0
< >
5 MHz
200 ns
400 ns
800 ns
1.6 s
0
µ
0
BGCS01 BGCS00
BGCS
)
4 MHz
250 ns
500 ns
1 s
2 s
µ
µ
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