HD64F2318VTE25 Renesas Electronics America, HD64F2318VTE25 Datasheet - Page 454

• Manufacturer Part Number: HD64F2318VTE25
• Description: IC H8S MCU FLASH 256K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of HD64F2318VTE25

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 71
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 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: -

Section 11 Watchdog Timer
Bit 6
WT/IT
0
1
Notes: 1. The WDTOVF function is not available in the F-ZTAT versions.
Bit 5—Timer Enable (TME): Selects whether TCNT runs or is halted.
Bit 5
TME
0
1
Bits 4 and 3—Reserved: These bits cannot be modified and are always read as 1.
Bits 2 to 0—Clock Select 2 to 0 (CKS2 to CKS0): These bits select one of eight internal clock
sources, obtained by dividing the system clock (φ), for input to TCNT.
Bit 2
CKS2
0
1
Note: * The overflow period is the time from when TCNT starts counting up from H'00 until overflow
Rev.7.00 Feb. 14, 2007 page 420 of 1108
REJ09B0089-0700
occurs.
2. For details of the case where TCNT overflows in watchdog timer mode, see section
Bit 1
CKS1
0
1
0
1
11.2.3, Reset Control/Status Register (RSTCSR).
Description
Interval timer: Sends the CPU an interval timer interrupt request (WOVI)
when TCNT overflows
Watchdog timer: Generates the WDTOVF signal *
Description
TCNT is initialized to H'00 and halted
TCNT counts
Bit 0
CKS0
0
1
0
1
0
1
0
1
Description
Clock
φ/2 (Initial value)
φ/64
φ/128
φ/512
φ/2048
φ/8192
φ/32768
φ/131072
Overflow Period (when φ = 20 MHz) *
25.6 μs
819.2 μs
1.6 ms
6.6 ms
26.2 ms
104.9 ms
419.4 ms
1.68 s
1
when TCNT overflows *
(Initial value)
(Initial value)
2