HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 1435

• Manufacturer Part Number: HD64F2638F20J
• Description: IC H8S MCU FLASH 256K 128-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of HD64F2638F20J

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI, SmartCard
• Peripherals: Motor Control PWM, POR, PWM, WDT
• Number Of I /o: 72
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
TCNT0—Timer Counter 0
RSTCSR—Reset Control/Status Register
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Bit
Initial value
Read/Write
Notes: RSTCSR register differs from other registers in being more difficult to write to.
Bit
Initial value
Read/Write
Note: TCNT0 register differs from other registers in being more difficult to write to.
For details see section 12.2.4, Notes on Register Access.
Watchdog Overflow Flag
For details see section 12.2.4, Notes on Register Access.
* Can only be written with 0 for flag clearing.
0
1
[Clearing condition]
• Cleared by reading RSTCSR when WOVF = 1, then writing 0 to WOVF
[Setting condition]
• Set when TCNT overflows (changed from H'FF to H'00) during watchdog timer
operation
R/(W)*
WOVF
R/W
7
0
7
0
Note: * The modules within the H8S/2646 are not reset,
Reset Enable
RSTE
R/W
R/W
0
1
6
0
6
0
Reset signal is not generated if TCNT overflows*
Reset signal is generated if TCNT overflows
but TCNT and TCSR within the WDT are reset.
Reset Select
RSTS
R/W
R/W
0
1
5
0
5
0
Reset
Do not set
R/W
Up-counter
⎯
⎯
4
0
4
0
H'FF74(W), H'FF75(R)
H'FF76(W), H'FF77(R)
R/W
⎯
⎯
3
0
3
0
R/W
⎯
⎯
2
0
2
0
Appendix B Internal I/O Register
R/W
⎯
⎯
1
0
1
0
Page 1385 of 1458
R/W
⎯
⎯
0
0
0
0
WDT0
WDT0