HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 787

• 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: -

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Note: The H8S/2635 Group is not equipped with a DTC.
20.1
The H8S/2636 has 4 kbytes, and H8S/2638, H8S/2639, and H8S/2630 have 16 kbytes of on-chip
high-speed static RAM. The H8S/2635 has 6 kbytes of on-chip RAM. The RAM is connected to
the CPU by a 16-bit data bus, enabling one-state access by the CPU to both byte data and word
data. This makes it possible to perform fast word data transfer.
The on-chip RAM can be enabled or disabled by means of the RAM enable bit (RAME) in the
system control register (SYSCR).
20.1.1
Figure 20-1 shows a block diagram of the on-chip RAM.
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Overview
Block Diagram
Figure 20-1 (a) Block Diagram of RAM (H8S/2636)
H'FFE000
H'FFE002
H'FFE004
H'FFEFBE
H'FFFFC0
H'FFFFFE
Section 20 RAM
Internal data bus (upper 8 bits)
Internal data bus (lower 8 bits)
H'FFEFBF
H'FFFFC1
H'FFFFFF
H'FFE001
H'FFE003
H'FFE005
Section 20 RAM
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