HD64F3684FP Renesas Electronics America, HD64F3684FP Datasheet - Page 287

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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14.2.2
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.
14.2.3
TMWD selects the input clock.
Legend: X: Don't care.
Bit
0
Bit
7 to 4
3
2
1
0
Bit
Name Initial Value R/W
WRST 0
Bit Name
CKS3
CKS2
CKS1
CKS0
Timer Counter WD (TCWD)
Timer Mode Register WD (TMWD)
Initial
Value
All 1
1
1
1
1
R/W
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
23, 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.5.00 Nov. 02, 2005 Page 253 of 500
Section 14 Watchdog Timer
REJ09B0027-0500

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