HD64F3644DV Renesas Electronics America, HD64F3644DV Datasheet - Page 277

• 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: -

Read Access: In access to FRC and ICRA to ICRD, when the upper byte is read the upper-byte
data is transferred directly to the CPU and the lower-byte data is transferred to TEMP. Next, when
the lower byte is read, the lower-byte data in TEMP is transferred to the CPU.
In access to OCRA or OCRB, when the upper byte is read the upper-byte data is transferred
directly to the CPU, and when the lower byte is read the lower-byte data is transferred directly to
the CPU.
Figure 9.19 shows an example of the reading of FRC when FRC contains H'AAFF.
Read upper byte
CPU
(H'AA)
Read lower byte
CPU
(H'FF)
Note: H'AB00 if counter has been updated once.
Figure 9.19 Read Access to FRC (FRC
interface
interface
Bus
Bus
( AB )
(H'AA)
FRCH
FRCH
Rev. 6.00 Sep 12, 2006 page 255 of 526
TEMP
(H'FF)
TEMP
(H'FF)
CPU)
( 00 )
(H'FF)
FRCL
FRCL
Module data bus
Module data bus
REJ09B0326-0600
Section 9 Timers