HD64F2623FA20J Renesas Electronics America, HD64F2623FA20J Datasheet - Page 436

• Manufacturer Part Number: HD64F2623FA20J
• Description: IC H8S MCU FLASH 256K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of HD64F2623FA20J

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 12K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 12 Watchdog Timer
12.2.4
PFCR is an 8-bit readable/writable register that performs address output control in external
expanded mode.
Only bit 5 is described here. For details of the other bits, see section 7.2.6, Pin Function Control
Register (PFCR).
Bit 5—BUZZ Output Enable (BUZZE) * : Enables or disables BUZZ output from the PF1 pin.
The WDT1 input clock selected with bits PSS and CKS2 to CKS0 is output as the BUZZ signal.
Note: * In the H8S/2623 Group this bit is reserved, and must be written with 0.
Bit 5
BUZZE
0
1
12.2.5
The watchdog timer’s TCNT, TCSR, and RSTCSR registers differ from other registers in being
more difficult to write to. The procedures for writing to and reading these registers are given
below.
Writing to TCNT and TCSR: These registers must be written to by a word transfer instruction.
They cannot be written to with byte instructions.
Figure 12.2 shows the format of data written to TCNT and TCSR. TCNT and TCSR both have the
same write address. For a write to TCNT, the upper byte of the written word must contain H'5A
and the lower byte must contain the write data. For a write to TCSR, the upper byte of the written
word must contain H'A5 and the lower byte must contain the write data. This transfers the write
data from the lower byte to TCNT or TCSR.
Rev. 5.00 Jan 10, 2006 page 410 of 1042
REJ09B0275-0500
Bit
Initial value :
R/W
Pin Function Control Register (PFCR)
Notes on Register Access
Description
Functions as PF1 I/O pin
Functions as BUZZ output pin
:
:
R/W
—
7
0
R/W
—
6
0
BUZZE
R/W
5
0
R/W
—
4
0
AE3
R/W
1/0
3
AE2
R/W
1/0
2
AE1
R/W
1
0
(Initial value)
AE0
R/W
1/0
0