HD64F3672FPIV Renesas Electronics America, HD64F3672FPIV Datasheet - Page 187

• Manufacturer Part Number: HD64F3672FPIV
• Description: MCU 3/5V 16K I-TEMP PB-FREE 64-L
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of HD64F3672FPIV

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: SCI
• Peripherals: PWM, WDT
• Number Of I /o: 26
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• For Use With: R0K436079S000BE - KIT DEV FOR H8/36079 W/COMPILER
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

12.2.2
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.
12.2.3
TMWD selects the input clock.
Legend: X: Don't care.
Bit Bit Name
0
Bit
7 to 4
3
2
1
0
WRST
Bit Name
CKS3
CKS2
CKS1
CKS0
Timer Counter WD (TCWD)
Timer Mode Register WD (TMWD)
Initial Value R/W
0
Initial Value R/W
All 1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
Description
Watchdog Timer Reset
[Setting condition]
When TCWD overflows and an internal reset signal is
generated
[Clearing conditions]
Description
Reserved
These bits are always read as 1.
Clock Select 3 to 0
Select the clock to be input to TCWD.
1000: Internal clock: counts on /64
1001: Internal clock: counts on /128
1010: Internal clock: counts on /256
1011: Internal clock: counts on /512
1100: Internal clock: counts on /1024
1101: Internal clock: counts on /2048
1110: Internal clock: counts on /4096
1111: Internal clock: counts on 8192
0XXX: Internal oscillator
For the internal oscillator overflow periods, see section
17, Electrical Characteristics.
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.4.00 Nov. 02, 2005 Page 161 of 304
Section 12 Watchdog Timer
REJ09B0143-0400