HD64F3644DV Renesas Electronics America, HD64F3644DV Datasheet - Page 293

• 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: -

Register Configuration
Table 9.20 shows the register configuration of the watchdog timer.
Table 9.20
Name
Timer control/status register W
Timer counter W
9.6.2
Timer Control/Status Register W (TCSRW)
Note:
TCSRW is an 8-bit read/write register that controls write access to TCW and TCSRW itself,
controls watchdog timer operations, and indicates operating status.
Bit 7 Bit 6 Write Inhibit (B6WI): Bit 7 controls the writing of data to bit 6 in TCSRW.
This bit is always read as 1. Data written to this bit is not stored.
Bit 7: B6WI
0
1
Bit 6 Timer Counter W Write Enable (TCWE): Bit 6 controls the writing of data to bit 8 to
TCW.
Bit 6: TCWE
0
1
Bit
Initial value
Read/Write
* Write is permitted only under certain conditions, which are given in the descriptions of
Register Descriptions
the individual bits.
Watchdog Timer Registers
B6WI
Description
Bit 6 is write-enabled
Bit 6 is write-protected
Data cannot be written to TCW
Data can be written to TCW
Description
R
7
1
R/(W) *
TCWE
0
6
TCSRW
Abbr.
TCW
B4WI
R
1
5
TCSRWE
R/(W) *
4
0
R/W
R/W
R/W
Rev. 6.00 Sep 12, 2006 page 271 of 526
B2WI
R
3
1
Initial Value
H'AA
H'00
WDON
R/(W) *
2
0
REJ09B0326-0600
Section 9 Timers
B0WI
Address
H'FFBE
H'FFBF
R
1
1
(initial value)
(initial value)
R/(W) *
WRST
0
0