HD64F3684FP Renesas Electronics America, HD64F3684FP Datasheet - Page 286

IC H8 MCU FLASH 32K 64LQFP

HD64F3684FP

Manufacturer Part Number
HD64F3684FP
Description
IC H8 MCU FLASH 32K 64LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300H Tinyr
Datasheet

Specifications of HD64F3684FP

Core Processor
H8/300H
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, SCI
Peripherals
PWM, WDT
Number Of I /o
45
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
4K 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
64-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-

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Section 14 Watchdog Timer
14.2.1
TCSRWD performs the TCSRWD and TCWD write control. TCSRWD also controls the
watchdog timer operation and indicates the operating state. TCSRWD must be rewritten by using
the MOV instruction. The bit manipulation instruction cannot be used to change the setting value.
Rev.5.00 Nov. 02, 2005 Page 252 of 500
REJ09B0027-0500
Bit
7
6
5
4
3
2
1
Bit Name
B6WI
TCWE
B4WI
TCSRWE
B2WI
WDON
B0WI
Timer Control/Status Register WD (TCSRWD)
Initial
Value
1
0
1
0
1
0
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Bit 6 Write Inhibit
The TCWE bit can be written only when the write value of
the B6WI bit is 0.
This bit is always read as 1.
Timer Counter WD Write Enable
TCWD can be written when the TCWE bit is set to 1.
When writing data to this bit, the value for bit 7 must be 0.
The TCSRWE bit can be written only when the write
value of the B4WI bit is 0. This bit is always read as 1.
Timer Control/Status Register WD Write Enable
The WDON and WRST bits can be written when the
TCSRWE bit is set to 1.
When writing data to this bit, the value for bit 5 must be 0.
This bit can be written to the WDON bit only when the
write value of the B2WI bit is 0.
This bit is always read as 1.
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.
Bit 4 Write Inhibit
Bit 2 Write Inhibit
Reset by RES pin
When 0 is written to the WDON bit while writing 0 to
the B2WI when the TCSRWE bit=1

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