HD64F2623FA20J Renesas Electronics America, HD64F2623FA20J Datasheet - Page 730

• 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 21A Power-Down Modes [H8S/2623 Group]
21A.2.2 System Clock Control Register (SCKCR)
SCKCR is an 8-bit readable/writable register that performs clock output control and medium-
speed mode control.
SCKCR is initialized to H'00 by a reset and in hardware standby mode. It is not initialized in
software standby mode.
Bit 7— Clock Output Disable (PSTOP): In combination with the DDR of the applicable port,
this bit controls output. See section 21A.8, Clock Output Disable Function, for details.
Bits 6 to 4—Reserved: These bits are always read as 0 and cannot be modified.
Bit 3—Frequency Multiplication Factor Switching Mode Select (STCS): Selects the operation
when the PLL circuit frequency multiplication factor is changed.
Bits 2 to 0—System clock select (SCK2 to SCK0): These bits select the bus master clock in
high-speed mode, and medium-speed mode.
Rev. 5.00 Jan 10, 2006 page 704 of 1042
REJ09B0275-0500
Bit 7
PSTOP
0
1
Bit 3
STCS
0
1
Bit
Initial value :
R/W
High-Speed Mode,
Medium-Speed Mode
Fixed high
Description
Specified multiplication factor is valid after transition to software standby mode
Specified multiplication factor is valid immediately after STC bits are rewritten
output (initial value)
:
:
PSTOP
R/W
7
0
—
—
6
0
Sleep Mode
Fixed high
output
—
—
5
0
Description
—
—
4
0
Software Standby
Mode
Fixed high
Fixed high
STCS
R/W
3
0
SCK2
R/W
2
0
Hardware Standby
Mode
High impedance
High impedance
SCK1
R/W
1
0
(Initial value)
SCK0
R/W
0
0