HD64F3644H Renesas Electronics America, HD64F3644H Datasheet - Page 109

• Manufacturer Part Number: HD64F3644H
• Description: IC H8 MCU FLASH 32K 64-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD64F3644H

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-QFP
• Package: 64PQFP
• Family Name: H8
• Maximum Speed: 8 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 45
• Interface Type: SCI
• On-chip Adc: 8-chx8-bit
• Number Of Timers: 4
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

5.1
The H8/3644 Group has eight modes of operation after a reset. These include seven power-down
modes, in which power dissipation is significantly reduced. Table 5.1 gives a summary of the eight
operating modes.
Table 5.1
Operating Mode
Active (high-speed) mode
Active (medium-speed) mode
Subactive mode
Sleep (high-speed) mode
Sleep (medium-speed) mode
Subsleep mode
Watch mode
Standby mode
Note:
Of these eight operating modes, all but the active (high-speed) mode are power-down modes. In
this section the two active modes (high-speed and medium speed) will be referred to collectively
as active mode, and the two sleep modes (high-speed and medium speed) will be referred to
collectively as sleep mode.
Figure 5.1 shows the transitions among these operation modes. Table 5.2 indicates the internal
states in each mode.
* Determined by the value set in bits MA1 and MA0 of system control register 1
Overview
(SYSCR1).
Operating Modes
Section 5 Power-Down Modes
Description
The CPU and all on-chip peripheral functions are operable on
the system clock
The CPU and all on-chip peripheral functions are operable on
the system clock, but at 1/64, 1/32, 1/6, or 1/8 * the speed in
active (high-speed) mode
The CPU, and the time-base function of timer A are operable
on the subclock
The CPU halts. On-chip peripheral functions except PWM are
operable on the system clock
The CPU halts. On-chip peripheral functions except PWM are
operable on the system clock, but at 1/64, 1/32, 1/6, or 1/8 * the
speed in active (high-speed) mode
The CPU halts. The time-base function of timer A are operable
on the subclock
The CPU halts. The time-base function of timer A is operable
on the subclock
The CPU and all on-chip peripheral functions halt
Rev. 6.00 Sep 12, 2006 page 87 of 526
Section 5 Power-Down Modes
REJ09B0326-0600