HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 219

• 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
7.4.3
Table 7-4 shows the data buses used and valid strobes for the access spaces.
In a read, the RD signal is valid without discrimination between the upper and lower halves of the
data bus.
In a write, the HWR signal is valid for the upper half of the data bus, and the LWR signal for the
lower half.
Table 7-4
Area
Note: Hi-Z:
REJ09B0103-0800 Rev. 8.00
May 28, 2010
8-bit access
space
16-bit access
space
Invalid: Input state; input value is ignored.
Valid Strobes
Data Buses Used and Valid Strobes
Access
Size
Byte
Byte
Word
High impedance.
Read/
Write
Write
Read
Write
Read
Write
Read
Address
—
—
Even
Odd
Even
Odd
—
—
Valid
Strobe
HWR
LWR
RD
HWR, LWR Valid
RD
HWR
RD
Upper Data Bus
(D15 to D8)
Valid
Valid
Invalid
Valid
Hi-Z
Valid
Lower data bus
(D7 to D0)
Hi-Z
Valid
Valid
Invalid
Hi-Z
Invalid
Valid
Valid
Section 7 Bus Controller
Page 169 of 1458