HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 153

• 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
4.7
When accessing word data or longword data, the chip assumes that the lowest address bit is 0. The
stack should always be accessed by word transfer instruction or longword transfer instruction, and
the value of the stack pointer (SP, ER7) should always be kept even. Use the following
instructions to save registers:
Use the following instructions to restore registers:
Setting SP to an odd value may lead to a malfunction. Figure 4-6 shows an example of what
happens when the SP value is odd.
REJ09B0103-0800 Rev. 8.00
May 28, 2010
PUSH.W
PUSH.L
POP.W
POP.L
SP
Notes on Use of the Stack
Note: This diagram illustrates an example in which the interrupt control mode
Legend:
SP set to H'FFFEFF
Rn
ERn
Rn
ERn
is 0, in advanced mode.
TRAPA instruction executed
CCR: Condition code register
PC:
R1L: General register R1L
SP:
(or MOV.W Rn, @-SP)
(or MOV.L ERn, @-SP)
(or MOV.W @SP+, Rn)
(or MOV.L @SP+, ERn)
Figure 4-6 Operation when SP Value Is Odd
Stack pointer
Program counter
SP
Data saved above SP
CCR
PC
MOV.B R1L, @−ER7
SP
Contents of CCR lost
R1L
PC
Section 4 Exception Handling
H'FFFEFA
H'FFFEFB
H'FFFEFC
H'FFFEFD
H'FFFEFE
H'FFFEFF
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