HD64F3644H Renesas Electronics America, HD64F3644H Datasheet - Page 189

• 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: -

7.1
The H8/3644 Group has 1 kbyte and 512 byte of high-speed static RAM on-chip. The RAM is
connected to the CPU by a 16-bit data bus, allowing high-speed 2-state access for both byte data
and word data.
7.1.1
Figure 7.1 shows a block diagram of the on-chip RAM.
Overview
Block Diagram
H'FF7E
H'FB80
H'FB82
Even-numbered
Figure 7.1 RAM Block Diagram
Internal data bus (upper 8 bits)
address
Internal data bus (lower 8 bits)
H'FF7E
H'FB80
H'FB82
Section 7 RAM
On-chip RAM
Odd-numbered
Rev. 6.00 Sep 12, 2006 page 167 of 526
address
H'FB81
H'FB83
H'FF7F
REJ09B0326-0600
Section 7 RAM