HD64F3644DV Renesas Electronics America, HD64F3644DV Datasheet - Page 276

• Manufacturer Part Number: HD64F3644DV
• Description: IC H8/3644 MCU FLASH 64QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD64F3644DV

• 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: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 9 Timers
Write Access: Write access to the upper byte results in transfer of the upper-byte write data to
TEMP. Next, write access to the lower byte results in transfer of the data in TEMP to the upper
register byte, and direct transfer of the lower-byte write data to the lower register byte.
Figure 9.18 shows an example of the writing of H'AA55 to FRC.
Rev. 6.00 Sep 12, 2006 page 254 of 526
REJ09B0326-0600
Write to upper byte
CPU
(H'AA)
Write to lower byte
CPU
(H'55)
Figure 9.18 Write Access to FRC (CPU
interface
interface
Bus
Bus
(H'AA)
(
FRCH
FRCH
)
(H'AA)
(H'AA)
TEMP
TEMP
FRC)
(
(H'55)
FRCL
FRCL
Module data bus
Module data bus
)