HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 980

• 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: -

Section 23A Power-Down Modes
HD6432638F, HD64F2630F, HD6432630F, HD64F2635F, HD6432635F, HD6432634F]
23A.2 Register Descriptions
23A.2.1 Standby Control Register (SBYCR)
SBYCR is an 8-bit readable/writable register that performs power-down mode control.
SBYCR is initialized to H'58 by a reset and in hardware standby mode. It is not initialized in
software standby mode.
Bit 7—Software Standby (SSBY): When making a low power dissipation mode transition by
executing the SLEEP instruction, the operating mode is determined in combination with other
control bits.
Note that the value of the SSBY bit does not change even when shifting between modes using
interrupts.
Bit 7
SSBY
0
1
Bits 6 to 4—Standby Timer Select 2 to 0 (STS2 to STS0): These bits select the MCU wait time
for clock stabilization when shifting to high-speed mode or medium-speed mode by using a
specific interrupt or command to cancel software standby mode. With a quartz oscillator (Table
23A-5), select a wait time of 8ms (oscillation stabilization time) or more, depending on the
operating frequency. With an external clock, select a standby time of 2 ms or more (PLL oscillator
settling time), based on the operating frequency.
Page 930 of 1458
Bit
Initial value
R/W
Description
Shifts to sleep mode when the SLEEP instruction is executed in high-speed
mode or medium-speed mode.
Shifts to software standby mode when the SLEEP instruction is executed in high-
speed mode or medium-speed mode.
:
:
:
SSBY
R/W
7
0
[HD64F2636F, HD64F2638F, HD6432636F,
STS2
R/W
6
1
STS1
R/W
5
0
STS0
R/W
4
1
OPE
R/W
3
1
⎯
⎯
2
0
H8S/2639, H8S/2638, H8S/2636,
REJ09B0103-0800 Rev. 8.00
H8S/2630, H8S/2635 Group
⎯
⎯
1
0
(Initial value)
May 28, 2010
⎯
⎯
0
0