HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 228

• 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: -

Section 7 Bus Controller
7.4.5
When accessing external space, the chip can extend the bus cycle by inserting one or more wait
states (T
Program Wait Insertion
From 0 to 3 wait states can be inserted automatically between the T
individual area basis in 3-state access space, according to the settings of WCRH and WCRL.
Figure 7-13 shows an example of wait state insertion timing.
The settings after a reset are: 3-state access, 3 program wait state insertion.
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Read
Write
w
). There are two ways of inserting wait states: program wait insertion.
Wait Control
Address bus
HWR, LWR
Data bus
Data bus
φ
RD
AS
Figure 7-13 Example of Wait State Insertion Timing
T
1
By program wait
T
2
T
w
Write data
T
w
2
state and T
H8S/2639, H8S/2638, H8S/2636,
T
REJ09B0103-0800 Rev. 8.00
H8S/2630, H8S/2635 Group
w
3
Read data
state on an
T
3
May 28, 2010