HD64F3644DV Renesas Electronics America, HD64F3644DV Datasheet - Page 494

• Manufacturer Part Number: HD64F3644DV
• Description: IC H8/3644 MCU FLASH 64QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD64F3644DV

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Appendix B Internal I/O Registers
TCSRW—Timer control/status register W
Rev. 6.00 Sep 12, 2006 page 472 of 526
REJ09B0326-0600
Bit
Initial value
Read/Write
Bit 6 write inhibit
Note: * Write is permitted only under certain conditions.
0 Bit 6 is write-enabled
1
Timer counter W write enable
0 Data cannot be written to TCW
1
Bit 6 is write-protected
Bit 4 write inhibit
Data can be written to TCW
0 Bit 4 is write-enabled
1
Timer control/status register W write enable
0 Data cannot be written to TCSRW bits 2 and 0
1
Bit 4 is write-protected
Bit 2 write inhibit
Data can be written to TCSRW bits 2 and 0
0 Bit 2 is write-enabled
1
B6WI
Watchdog timer on
Bit 2 is write-protected
0 Watchdog timer operation is disabled
1
R
7
1
Bit 0 write inhibit
0 Bit 0 is write-enabled
1
Watchdog timer operation is enabled
Watchdog timer reset
0 [Clearing conditions]
1 [Setting condition]
Bit 0 is write-protected
TCWE
R/(W)
• Reset by RES pin
• When TCSRWE = 1, and 0 is written in both B0WI and WRST
When TCW overflows and a reset signal is generated
6
0
*
B4WI
R
5
1
TCSRWE
R/(W)
4
0
*
B2WI
R
3
1
H'FFBE
WDON
R/(W)
2
0
*
B0WI
R
1
1
Watchdog timer
WRST
R/(W)
0
0
*