HD64F2623FA20J Renesas Electronics America, HD64F2623FA20J Datasheet - Page 121

• Manufacturer Part Number: HD64F2623FA20J
• Description: IC H8S MCU FLASH 256K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of HD64F2623FA20J

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 12K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

4.7
When accessing word data or longword data, the H8S/2626 Group or H8S/2623 Group 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.
Legend:
Note: This diagram illustrates an example in which the interrupt control mode
SP
is 0, in advanced mode.
PUSH.W
PUSH.L
POP.W
POP.L
Notes on Use of the Stack
CCR: Condition code register
PC:
R1L: General register R1L
SP:
SP set to H'FFFEFF
Stack pointer
Program counter
TRAP instruction executed
Rn
ERn
Rn
ERn
Figure 4.6 Operation when SP Value is Odd
(or MOV.W Rn, @-SP)
(or MOV.L ERn, @-SP)
(or MOV.W @SP+, Rn)
(or MOV.L @SP+, ERn)
SP
Data saved above SP
CCR
PC
MOV.B R1L, @–ER7
SP
Rev. 5.00 Jan 10, 2006 page 95 of 1042
Contents of CCR lost
Section 4 Exception Handling
R1L
PC
H'FFFEFA
H'FFFEFB
H'FFFEFC
H'FFFEFD
H'FFFEFF
REJ09B0275-0500