HD64F2612FA20 Renesas Electronics America, HD64F2612FA20 Datasheet - Page 340

• Manufacturer Part Number: HD64F2612FA20
• Description: IC H8S MCU FLASH 128K 80QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of HD64F2612FA20

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 43
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 13 Watchdog Timer
13.2
The WDT has the following three registers. For details, refer to appendix A, On-Chip I/O
Register. To prevent accidental overwriting, TCSR, TCNT, and RSTCSR have to be written to by
a different method to normal registers. For details, refer to section 13.5.1, Notes on Register
Access.
• Timer control/status register (TCSR)
• Timer counter (TCNT)
• Reset control/status register (RSTCSR)
13.2.1
TCNT is an 8-bit readable/writable up-counter. TCNT is initialized to H'00 by a reset, when the
TME bit in TCSR is cleared to 0.
Rev. 7.00 Sep. 11, 2009 Page 304 of 566
REJ09B0211-0700
Register Descriptions
Timer Counter (TCNT)
Internal reset signal *
(interrupt request
Legend:
TCSR:
TCNT:
RSTCSR:
Note: * The type of internal reset signal depends on a register setting.
signal)
WOVI
Timer control/status register
Timer counter
Reset control/status register
Figure 13.1 Block Diagram of WDT
RSTCSR
Interrupt
control
control
Reset
Overflow
Module bus
TCNT
Clock
WDT
select
Clock
TSCR
Internal clock
sources
interface
Bus
φ/2
φ/64
φ/128
φ/512
φ/2048
φ/8192
φ/32768
φ/131072