HD64F3694FY Renesas Electronics America, HD64F3694FY Datasheet - Page 215

• Manufacturer Part Number: HD64F3694FY
• Description: IC H8 MCU FLASH 32K 48-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of HD64F3694FY

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: PWM, WDT
• Number Of I /o: 29
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

13.2.2
TCWD is an 8-bit readable/writable up-counter. When TCWD overflows from H'FF to H'00, the
internal reset signal is generated and the WRST bit in TCSRWD is set to 1. TCWD is initialized to
H'00.
Bit
2
1
0
Bit Name
WDON
B0WI
WRST
Timer Counter WD (TCWD)
Initial
Value
0
1
0
R/W
R/W
R/W
R/W
Description
Watchdog Timer On
TCWD starts counting up when WDON is set to 1 and
halts when WDON is cleared to 0.
[Setting condition]
When 1 is written to the WDON bit while writing 0 to the
B2WI bit when the TCSRWE bit=1
[Clearing conditions]
Bit 0 Write Inhibit
This bit can be written to the WRST bit only when the
write value of the B0WI bit is 0. This bit is always read as
1.
Watchdog Timer Reset
[Setting condition]
When TCWD overflows and an internal reset signal is
generated
[Clearing conditions]
Reset by RES pin
When 0 is written to the WDON bit while writing 0 to
the B2WI when the TCSRWE bit=1
Reset by RES pin
When 0 is written to the WRST bit while writing 0 to
the B0WI bit when the TCSRWE bit=1
Rev.5.00 Nov. 02, 2005 Page 185 of 418
Section 13 Watchdog Timer
REJ09B0028-0500