UPD70F3740GC-UEU-AX Renesas Electronics America, UPD70F3740GC-UEU-AX Datasheet - Page 409

• Manufacturer Part Number: UPD70F3740GC-UEU-AX
• Description: MCU 32BIT V850ES/JX3 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3r

Specifications of UPD70F3740GC-UEU-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 32MHz
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 84
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 2.85 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: -

V850ES/JG3
10.4.3 Cautions
enabled (WTM.WTM1 and WTM.WTM0 bits = 1).
R01UH0015EJ0300 Rev.3.00
Sep 30, 2010
Some time is required before the first watch timer interrupt request signal (INTWT) is generated after operation is
Remarks 1. When 0.5 seconds of the watch timer interrupt time is set.
It takes 0.515625 seconds (max.) for the first INTWT signal to be generated (2
longer (max.)). The INTWT signal is then generated every 0.5 seconds.
Interval timer interrupt
Watch timer interrupt
2. f
Figure 10-3. Example of Generation of Watch Timer Interrupt Request Signal (INTWT)
Values in parentheses apply to operation with f
n: Number of interval timer operations
W
: Watch timer clock frequency
Count clock
WTM0, WTM1
f
W
INTWTI
or f
INTWT
5-bit counter
W
INTWT
/2
Figure 10-2. Operation Timing of Watch Timer/Interval Timer
9
0H
Start
Interval time (T)
Interrupt time of watch timer (0.5 s) Interrupt time of watch timer (0.5 s)
0.515625 s
(When Interrupt Cycle = 0.5 s)
nT
0.5 s
W
= 32.768 kHz.
Overflow
CHAPTER 10 WATCH TIMER FUNCTIONS
Interval time (T)
0.5 s
9
× 1/32768 = 0.015625 seconds
nT
Overflow
Page 393 of 870