UPD78F0386GK-8EU-A Renesas Electronics America, UPD78F0386GK-8EU-A Datasheet - Page 244

• Manufacturer Part Number: UPD78F0386GK-8EU-A
• Description: MCU 96KB FLASH 5KB RAM
• Manufacturer: Renesas Electronics America
• Series: 78K0/Lx2r

Specifications of UPD78F0386GK-8EU-A

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: LCD, LVD, POR, PWM, WDT
• Number Of I /o: 26
• Program Memory Size: 96KB (96K x 8)
• Program Memory Type: FLASH
• Ram Size: 5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

10.2 Configuration of Watchdog Timer
242
WINDOW1 and WINDOW0
The watchdog timer includes the following hardware.
How the counter operation is controlled, overflow time, and window open period are set by the option byte.
of option byte (0080H)
WDCS2 to WDCS0 of
option byte (0080H)
CPU access signal
WDTON of option
Remark For the option byte, see CHAPTER 25 OPTION BYTE.
f
Window open period
Controlling counter operation of watchdog timer
Overflow time of watchdog timer
RL
byte (0080H)
/2
Control register
Setting of Watchdog Timer
controller
Clock
input
Item
Table 10-2. Setting of Option Bytes and Watchdog Timer
Watchdog timer enable
register (WDTE)
Figure 10-1. Block Diagram of Watchdog Timer
Clear, reset control
Table 10-1. Configuration of Watchdog Timer
counter
17-bit
CHAPTER 10 WATCHDOG TIMER
Watchdog timer enable register (WDTE)
Count clear
signal
User’s Manual U17504EJ2V0UD
2
2
10
17
error detector
CPU access
/f
/f
RL
RL
Internal bus
to
determination
Selector
Window size
Bits 6 and 5 (WINDOW1, WINDOW0)
Bit 4 (WDTON)
Bits 3 to 1 (WDCS2 to WDCS0)
signal
Configuration
Overflow
signal
Option Byte (0080H)
controller
output
Reset
Internal reset signal