D6417709SHF200BV Renesas Electronics America, D6417709SHF200BV Datasheet - Page 264
D6417709SHF200BV
Manufacturer Part Number
D6417709SHF200BV
Description
IC SUPER H MPU ROMLESS 208LQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet
1.D6417709SBP167BV.pdf
(809 pages)
Specifications of D6417709SHF200BV
Core Processor
SH-3
Core Size
32-Bit
Speed
200MHz
Connectivity
EBI/EMI, FIFO, IrDA, SCI, SmartCard
Peripherals
DMA, POR, WDT
Number Of I /o
96
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.85 V ~ 2.15 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
208-QFP Exposed Pad, 208-eQFP, 208-HQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
D6417709SHF200BV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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9.8
9.8.1
The WDT can be used to cancel standby mode with an NMI or other interrupt. The procedure is
described below. (The WDT does not run when a reset is used for canceling, so keep the RESET
pin low until the clock stabilizes.)
1. Before transitioning to standby mode, always clear the TME bit in WTCSR to 0. When the
2. Set the type of count clock used in the CKS2–CKS0 bits in WTCSR and the initial values for
3. Switch to standby mode by executing a SLEEP instruction to stop the clock.
4. The WDT starts counting by detecting the edge change of the NMI signal or detecting
5. When the WDT count overflows, the CPG starts supplying the clock and the processor
6. Since the WDT continues counting from H'00, set the STBY bit in the STBCR register to 0 in
9.8.2
To change the frequency used by the PLL, use the WDT. When changing the frequency only by
switching the divider, do not use the WDT.
1. Before changing the frequency, always clear the TME bit in WTCSR to 0. When the TME bit
2. Set the type of count clock used in the CKS2–CKS0 bits of WTCSR and the initial values for
3. When the frequency control register (FRQCR) is written to, the clock stops and the processor
4. When the WDT count overflows, the CPG resumes supplying the clock and the processor
5. The counter stops at a value of H'00 or H'01. The stop value depends on the clock ratio.
Rev. 5.00, 09/03, page 218 of 760
TME bit is 1, an erroneous reset or interval timer interrupt may be generated when the count
overflows.
the counter in the WTCNT counter. These values should ensure that the time till count
overflow is longer than the clock oscillation settling time.
interrupts.
resumes operation. The WOVF flag in WTCSR is not set when this happens.
the interrupt handling routine and this will stop the WDT. When the STBY bit remains at 1,
the SH7709S again enters standby mode when the WDT has counted up to H'80. This standby
mode can be canceled by a power-on reset.
is 1, an erroneous reset or interval timer interrupt may be generated when the count overflows.
the counter in the WTCNT counter. These values should ensure that the time till count
overflow is longer than the clock oscillation settling time.
enters standby mode temporarily. The WDT starts counting.
resumes operation. The WOVF flag in WTCSR is not set when this happens.
Using the WDT
Canceling Standby
Changing the Frequency
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