R5S72030W200FP Renesas Electronics America, R5S72030W200FP Datasheet - Page 720
R5S72030W200FP
Manufacturer Part Number
R5S72030W200FP
Description
IC SUPERH MPU ROMLESS 240QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7200r
Specifications of R5S72030W200FP
Core Processor
SH2A-FPU
Core Size
32-Bit
Speed
200MHz
Connectivity
CAN, I²C, SCI, SSI, SSU, USB
Peripherals
DMA, LCD, POR, PWM, WDT
Number Of I /o
82
Program Memory Type
ROMless
Ram Size
80K x 8
Voltage - Supply (vcc/vdd)
1.1 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
240-QFP
For Use With
R0K572030S000BE - KIT DEV FOR SH7203HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
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Section 13 Watchdog Timer (WDT)
13.5
Pay attention to the following points when using the WDT in either the interval timer or watchdog
timer mode.
13.5.1
After timer operation has started, the period from the power-on reset point to the first count up
timing of WTCNT varies depending on the time period that is set by the TME bit of WTCSR. The
shortest such time period is thus one cycle of the peripheral clock, Pφ, while the longest is the
result of frequency division according to the value in the CKS[2:0] bits. The timing of subsequent
incrementation is in accord with the selected frequency division ratio. Accordingly, this time
difference is referred to as timer variation.
This also applies to the timing of the first incrementation after WTCNT has been written to during
timer operation.
13.5.2
When the value in WTCNT reaches H'FF, the WDT assumes that an overflow has occurred.
Accordingly, when H'FF is set in WTCNT, an interval timer interrupt or WDT reset will occur
immediately, regardless of the current clock selection by the CKS[2:0] bits.
13.5.3
When the value in WTCNT is H'FF, the IOVF flag in WTCSR cannot be cleared.
Only clear the IOVF flag when the value in WTCNT has either become H'00 or been changed to a
value other than H'FF.
Rev. 3.00 Sep. 28, 2009 Page 688 of 1650
REJ09B0313-0300
Usage Notes
Timer Variation
Prohibition against Setting H'FF to WTCNT
Interval Timer Overflow Flag
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