HD64F3684FP Renesas Electronics America, HD64F3684FP Datasheet - Page 285
HD64F3684FP
Manufacturer Part Number
HD64F3684FP
Description
IC H8 MCU FLASH 32K 64LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300H Tinyr
Datasheet
1.HD64F3684GFPV.pdf
(538 pages)
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
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD64F3684FPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
HD64F3684FPV
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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The watchdog timer is an 8-bit timer that can generate an internal reset signal for this LSI if a
system crash prevents the CPU from writing to the timer counter, thus allowing it to overflow.
The block diagram of the watchdog timer is shown in figure 14.1.
14.1
14.2
The watchdog timer has the following registers.
WDT0110A_000020020200
Selectable from nine counter input clocks.
Eight clock sources ( /64, /128, /256, /512, /1024, /2048, /4096, and /8192) or the
internal oscillator can be selected as the timer-counter clock. When the internal oscillator is
selected, it can operate as the watchdog timer in any operating mode.
Reset signal generated on counter overflow
An overflow period of 1 to 256 times the selected clock can be set.
Timer control/status register WD (TCSRWD)
Timer counter WD (TCWD)
Timer mode register WD (TMWD)
Features
Register Descriptions
[Legend]
TCSRWD: Timer control/status register WD
TCWD:
PSS:
TMWD:
oscillator
Internal
Timer counter WD
Prescaler S
Timer mode register WD
Figure 14.1 Block Diagram of Watchdog Timer
Section 14 Watchdog Timer
CLK
PSS
TCSRWD
TCWD
TMWD
Rev.5.00 Nov. 02, 2005 Page 251 of 500
Section 14 Watchdog Timer
Internal reset
signal
REJ09B0027-0500
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