DF2377RVFQ33 Renesas Electronics America, DF2377RVFQ33 Datasheet - Page 750
DF2377RVFQ33
Manufacturer Part Number
DF2377RVFQ33
Description
IC H8S MCU FLASH 3V 384K 144LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Datasheet
1.YR0K42378FC000BA.pdf
(1208 pages)
Specifications of DF2377RVFQ33
Core Processor
H8S/2000
Core Size
16-Bit
Speed
33MHz
Connectivity
I²C, IrDA, SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
97
Program Memory Size
384KB (384K x 8)
Program Memory Type
FLASH
Ram Size
24K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 16x10b; D/A 6x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Section 14 Watchdog Timer (WDT)
14.4
14.4.1
To use the WDT as a watchdog timer mode, set the WT/IT and TME bits in TCSR to 1.
If TCNT overflows without being rewritten because of a system crash or other error, the
WDTOVF signal is output.
This ensures that TCNT does not overflow while the system is operating normally. Software must
prevent TCNT overflows by rewriting the TCNT value (normally be writing H'00) before
overflow occurs. This WDTOVF signal can be used to reset the chip internally in watchdog timer
mode.
If TCNT overflows when 1 is set in the RSTE bit in RSTCSR, a signal that resets this LSI
internally is generated at the same time as the WDTOVF signal. If a reset caused by a signal input
to the RES pin occurs at the same time as a reset caused by a WDT overflow, the RES pin reset
has priority and the WOVF bit in RSTCSR is cleared to 0.
The WDTOVF signal is output for 132 states when RSTE = 1, and for 130 states when RSTE = 0.
The internal reset signal is output for 518 states.
When TCNT overflows in watchdog timer mode, the WOVF bit in RSTCSR is set to 1. If TCNT
overflows when 1 is set in the RSTE bit in RSTCSR, an internal reset signal is generated to the
entire chip.
Rev.7.00 Mar. 18, 2009 page 682 of 1136
REJ09B0109-0700
Operation
Watchdog Timer Mode
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