DF2505FC26V Renesas Electronics America, DF2505FC26V Datasheet - Page 439

• Manufacturer Part Number: DF2505FC26V
• Description: IC H8S/2505 MCU FLASH 144QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2505FC26V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 26MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 104
• Program Memory Size: 384KB (384K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Writing to RSTCSR: This register must be written to by a word transfer instruction. It cannot be
written to by a byte transfer instruction. Refer to figure 12.7.
The method of writing 0 to the WOVF bit differs from that of writing to the RSTE and RSTS bits.
To write 0 to the WOVF bit, the upper byte must be H'A5 and the lower byte must be H'00. This
clears the WOVF bit to 0 and does not affect the RSTE and RSTS bits.
To write to the RSTE and RSTS bits, the upper byte must be H'5A and the lower byte must be data
to be written to. Bits 6 and 5 in the lower byte are written to the RSTE and RSTS bits,
respectively. This does not affect the WOVF bit.
Reading from TCNT, TCSR and RSTCSR (in the case of WDT_0): These registers are read in
the same way as other registers. The read addresses are allocated in H'FF74 for TCSR, H'FF75 for
TCNT, and H'FF77 for RSTCSR.
Writing 0 to WOVF bit
Writing to RSTE or RSTS bit
Address:
Address:
Figure 12.7 Writing to RSTCSR
H'FF76
H'FF76
15
15
H'A5
H'5A
8 7
8 7
Write data
Rev. 6.00 Sep. 24, 2009 Page 391 of 928
H'00
Section 12 Watchdog Timer (WDT)
0
0
REJ09B0099-0600