D12674RVFQ33D Renesas Electronics America, D12674RVFQ33D Datasheet - Page 709

• Manufacturer Part Number: D12674RVFQ33D
• Description: MCU 3V 0K I-TEMP 144-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of D12674RVFQ33D

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 33MHz
• Connectivity: IrDA, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 103
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: HD6412674RVFQ33D; HD6412674RVFQ33D

Writing to TCNT, TCSR, and RSTCSR
TCNT and TCSR must be written to by a word transfer instruction. They cannot be written to by a
byte transfer instruction.
TCNT and TCSR both have the same write address. Therefore, satisfy the relative condition
shown in figure 14.4 to write to TCNT or TCSR. The transfer instruction writes the lower byte
data to TCNT or TCSR according to the satisfied condition.
To write to RSTCSR, execute a word transfer instruction for address H'FFBE. A byte transfer
instruction cannot perform writing to RSTCSR.
The method of writing 0 to the WOVF bit differs from that of writing to the RSTE bit. To write 0
to the WOVF bit, satisfy the lower condition shown in figure 14.4.
If satisfied, the transfer instruction clears the WOVF bit to 0, but has no effect on the RSTE bit.
To write to the RSTE bit, satisfy the above condition shown in figure 14.4. If satisfied, the transfer
instruction writes the value in bit 6 of the lower byte into the RSTE bit, but has no effect on the
WOVF bit.
Reading TCNT, TCSR, and RSTCSR
These registers are read in the same way as other registers. The read addresses are H'FFBC for
TCSR, H'FFBD for TCNT, and H'FFBF for RSTCSR.
Address: H'FFBC (TCNT)
Address: H'FFBC (TCSR)
Address: H'FFBE (RSTCSR)
Figure 14.4 Writing to TCNT, TCSR, and RSTCSR
TCNT write or
Writing to RSTE bit in RSTCSR
H'FFBE (RSTCSR)
TCSR write
Writing 0 to WOVF bit in RSTCSR
15
15
15
H'5A
H'A5
H'A5
Rev. 3.00 Mar 17, 2006 page 657 of 926
8 7
8 7
8 7
Write data
Write data
H'00
Section 14 Watchdog Timer
0
0
0
REJ09B0283-0300