HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 483

• 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
WDT1 TCSR
Bit 4
PSS
0
1
Note: * Subclock functions (subactive mode, subsleep mode, and watch mode) are available only in
WDT0 TCSR Bit 3—Reserved: A read operation on this bit always causes a 1 to be read out.
Every write operation on this bit is invalidated.
WDT1 TCSR Bit 3—Reset or NMI (RST/NMI): This bit is used to choose between an internal
reset request and an NMI request when the TCNT overflows during the watchdog timer mode.
Bit 3
RST/NMI
0
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) or subclock * (φSUB), for input to TCNT.
Note: * Subclock functions (subactive mode, subsleep mode, and watch mode) are available in the
REJ09B0103-0800 Rev. 8.00
May 28, 2010
the U-mask and W-mask versions, but are not available in the other versions.
U-mask and W-mask versions, and H8S/2635 Group only.
These functions cannot be used with the other versions, and in them the PSS bit is
reserved. Only 0 should be written to this bit.
Description
The TCNT counts frequency-division clock pulses of the φ based
prescaler (PSM)
The TCNT counts frequency-division clock pulses of the φ SUB * -based prescaler
(PSS)
Description
NMI request
Internal reset request
Section 12 Watchdog Timer
Page 433 of 1458
(Initial value)
(Initial value)