HD64F3026X25 Renesas Electronics America, HD64F3026X25 Datasheet - Page 385

• Manufacturer Part Number: HD64F3026X25
• Description: MCU 3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3026X25

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Writing to RSTCSR: RSTCSR must be written by a word transfer instruction. It cannot be
written by byte transfer instructions. Figure 11.3 shows the format of data written to RSTCSR. To
write 0 in the WRST bit, the write data must have H'A5 in the upper byte and H'00 in the lower
byte. The data (H'00) in the lower byte is written to RSTCSR, clearing the WRST bit to 0. To
write to the RSTOE bit, the upper byte must contain H'5A and the lower byte must contain the
write data. Writing this word transfers a write data value into the RSTOE bit.
Reading TCNT, TCSR, and RSTCSR: For reads of TCNT, TCSR, and RSTCSR, address
H'FFF8C is assigned to TCSR, address H'FFF8D to TCNT, and address H'FFF8F to RSTCSR.
These registers are therefore read like other registers. Byte transfer instructions can be used for
reading. Table 11.3 lists the read addresses of TCNT, TCSR, and RSTCSR.
Table 11.3 Read Addresses of TCNT, TCSR, and RSTCSR
Note: * Lower 20 bits of the address in advanced mode.
Address *
H'FFF8C
H'FFF8D
H'FFF8F
Writing 0 in WRST bit
Writing to RSTOE bit
Note: * Lower 20 bits of the address in advanced mode.
Address
Address
Figure 11.3 Format of Data Written to RSTCSR
H'FFF8E *
H'FFF8E *
Register
TCSR
TCNT
RSTCSR
15
15
H'A5
H'5A
Rev. 2.00 Sep 20, 2005 page 345 of 800
8 7
8 7
Section 11 Watchdog Timer
Write data
H'00
REJ09B0260-0200
0
0