DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 118

• Manufacturer Part Number: DF3048BVX25V
• Description: MCU 3/5V 128K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048BVX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 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 H8/3048B Group 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 Sep 27, 2006 page 90 of 872
REJ09B0325-0300
SP
Legend:
CCR:
PC:
R1L:
SP:
Note: The diagram illustrates modes 3 and 4.
PUSH.W Rn
PUSH.L ERn
POP.W Rn
POP.L ERn
Notes on Stack Usage
Condition code register
Program counter
General register R1L
Stack pointer
SP set to H'FFFEFF
TRAPA instruction executed
Figure 4.7 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
CCR contents lost
R1L
PC
H'FFFEFA
H'FFFEFB
H'FFFEFC
H'FFFEFD
H'FFFEFF