DF2134AFA20V Renesas Electronics America, DF2134AFA20V Datasheet - Page 156

• Manufacturer Part Number: DF2134AFA20V
• Description: IC H8S/2100 MCU FLASH 80QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2134AFA20V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 58
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 80-QFP
• For Use With: 3DK2166 - DEV EVAL KIT H8S/2166
• 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 H8S/2138 Group or H8S/2134 Group 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.
Rev. 4.00 Jun 06, 2006 page 100 of 1004
REJ09B0301-0400
Legend:
CCR: Condition-code register
PC:
R1L: General register R1L
SP:
Note: This diagram illustrates an example in which the interrupt control mode is 0, in advanced
SP
PUSH.W
PUSH.L
POP.W
POP.L
Stack pointer
Program counter
mode.
Notes on Use of the Stack
SP set to H'FFFEFF
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
Contents of CCR lost
R1L
PC
H'FFEFFA
H'FFEFFB
H'FFEFFC
H'FFEFFD
H'FFEFFF