R8A77850BDBGV#RD0Z Renesas Electronics America, R8A77850BDBGV#RD0Z Datasheet - Page 803
R8A77850BDBGV#RD0Z
Manufacturer Part Number
R8A77850BDBGV#RD0Z
Description
IC SUPERH MPU ROMLESS 436BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R8A77850AADBGV.pdf
(1694 pages)
Specifications of R8A77850BDBGV#RD0Z
Core Processor
SH-4A
Core Size
32-Bit
Speed
600MHz
Connectivity
Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
Peripherals
DMA, POR, WDT
Number Of I /o
108
Program Memory Type
ROMless
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
1 V ~ 1.2 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
436-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
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16.4.2
1. Set the WDTCNT overflow time in WDTST.
2. Set the WT/IT bit in WDTCSR to 1, and select the type of reset with the RSTS bit.
3. When the TME bit in WDTCSR is set to 1, the WDT counter starts.
4. In watchdog timer mode, clear the WDTCNT or WDTBCNT periodically so that WDTCNT
5. When the WDTCNT overflows, the WDT sets the WOVF flag in WDTCSR to 1, and
16.4.3
In interval timer mode, the WDT generates an interval timer interrupt each time the counter
overflows. This allows interrupt generation at regular intervals.
1. Set the WDTCNT overflow time in WDTST.
2. Clear the WT/IT bit in WDTCSR to 0.
3. When the TME bit in WDTCSR is set to 1, the WDT counter starts.
4. When the WDTCNT overflows, the WDT sets the IOVF flag in WDTCSR to 1, generating an
does not overflow. See section 16.4.5, Clearing WDT Counters, for how to clear the WDT
counter.
generates a reset of the type specified by the RSTS bit. After the reset state is exited,
WDTCNT and WDTBCNT start counting again.
interval timer interrupt (ITI) request. WDTCNT and WDTBCNT continue counting.
Using Watchdog Timer Mode
Using Interval Timer Mode
Rev.1.00 Jan. 10, 2008 Page 771 of 1658
16. Watchdog Timer and Reset (WDT)
REJ09B0261-0100
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