HD64F7144F50V Renesas Electronics America, HD64F7144F50V Datasheet - Page 434
HD64F7144F50V
Manufacturer Part Number
HD64F7144F50V
Description
IC SUPERH MCU FLASH 256K 112QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7144r
Specifications of HD64F7144F50V
Core Processor
SH-2
Core Size
32-Bit
Speed
50MHz
Connectivity
EBI/EMI, I²C, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
74
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
112-QFP
For Use With
HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)EDK7145 - DEV EVALUATION KIT SH7145
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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12. Watchdog Timer
12.4.5
When TCNT overflows in watchdog timer mode, the WOVF bit of RSTCSR is set to 1 and a
WDTOVF signal is output. When the RSTE bit in RSTCSR is set to 1, TCNT overflow enables an
internal reset signal to be generated for the entire chip. Figure 12.5 shows this timing.
12.5
During interval timer mode operation, an overflow generates an interval timer interrupt (ITI). The
interval timer interrupt is requested whenever the OVF flag is set to 1 in TCSR. OVF must be
cleared to 0 in the interrupt handling routine.
Table 12.2 WDT Interrupt Source (in Interval Timer Mode)
Rev.4.00 Mar. 27, 2008 Page 388 of 882
REJ09B0108-0400
Name
ITI
Timing of Setting Watchdog Timer Overflow Flag (WOVF)
Interrupt Source
φ
Overflow signal
(internal signal)
WOVF
TCNT
Interrupt Source
TCNT overflow
Figure 12.5 Timing of Setting WOVF
H'FF
H'00
Interrupt Flag
OVF
DMAC/DTC Activation
Impossible
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