DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 108

• Manufacturer Part Number: DF3052BX25V
• Description: MCU 5V 512K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3052BX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 4 Exception Handling
4.6
When accessing word data or longword data, the H8/3052BF regards the lowest address bit as 0.
The stack should always be accessed by word access or longword access, 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 4.7 shows an example of what
happens when the SP value is odd.
Rev. 3.00 Mar 21, 2006 page 78 of 814
REJ09B0302-0300
PUSH.W Rn (or MOV.W Rn, @–SP)
PUSH.L ERn (or MOV.L ERn, @–SP)
POP.W Rn
POP.L ERn
SP
Legend:
CCR:
PC:
R1L:
SP:
Note: The diagram illustrates modes 3 and 4.
Notes on Use of the Stack
Condition code register
Program counter
General register R1L
Stack pointer
SP set to H'FFFEFF
(or MOV.W @SP+, Rn)
(or MOV.L @SP+, ERn)
TRAPA instruction executed
Figure 4.7 Operation when SP Value Is Odd
SP
Data saved above SP
CCR
PC
MOV. B R1L, @-ER7
SP
CCR contents lost
R1L
PC
H'FFFEFA
H'FFFEFB
H'FFFEFC
H'FFFEFD
H'FFFEFF