HD64F2623FA20J Renesas Electronics America, HD64F2623FA20J Datasheet - Page 437

• Manufacturer Part Number: HD64F2623FA20J
• Description: IC H8S MCU FLASH 256K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of HD64F2623FA20J

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 12K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Writing to RSTCSR: RSTCSR must be written to by word transfer instruction to address
H'FF76. It cannot be written to with byte instructions.
Figure 12.3 shows the format of data written to RSTCSR. The method of writing 0 to the WOVF
bit differs from that for writing to the RSTE and RSTS bits.
To write 0 to the WOVF bit, the write data must have H'A5 in the upper byte and H'00 in the
lower byte. This clears the WOVF bit to 0, but has no effect on the RSTE and RSTS bits. To write
to the RSTE and RSTS bits, the upper byte must contain H'5A and the lower byte must contain the
write data. This writes the values in bits 6 and 5 of the lower byte into the RSTE and RSTS bits,
but has no effect on the WOVF bit.
Reading TCNT, TCSR, and RSTCSR (WDT0): These registers are read in the same way as
other registers. The read addresses are H'FF74 for TCSR, H'FF75 for TCNT, and H'FF77 for
RSTCSR.
Writing 0 to WOVF bit
Writing to RSTE and RSTS bits
TCNT write
TCSR write
Address: H'FF76
Address: H'FF76
Address: H'FF74
Address: H'FF74
Figure 12.2 Format of Data Written to TCNT and TCSR
Figure 12.3 Format of Data Written to RSTCSR
15
15
15
15
H'5A
H'A5
H'A5
H'5A
Rev. 5.00 Jan 10, 2006 page 411 of 1042
8 7
8 7
8 7
8 7
Section 12 Watchdog Timer
Write data
Write data
Write data
H'00
REJ09B0275-0500
0
0
0
0