DF61657CN35FTV Renesas Electronics America, DF61657CN35FTV Datasheet - Page 115

• Manufacturer Part Number: DF61657CN35FTV
• Description: IC H8SX/1657 MCU FLASH 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of DF61657CN35FTV

• Core Processor: H8SX
• Core Size: 32-Bit
• Speed: 35MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 768KB (768K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K 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: 120-TQFP, 120-VQFP
• For Use With: 3DK1657 - DEV EVAL KIT FOR H8SX/1657
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

4.9
When performing stack-manipulating access, this LSI assumes that the lowest address bit is 0. The
stack should always be accessed by a word transfer instruction or a longword transfer instruction,
and the value of the stack pointer (SP: ER7) should always be kept even. Use the following
instructions to save registers:
• PUSH.W Rn (or MOV.W Rn, @-SP)
• PUSH.L ERn (or MOV.L ERn, @-SP)
Use the following instructions to restore registers:
• POP.W Rn (or MOV.W @SP+, Rn)
• POP.L ERn (or MOV.L @SP+, ERn)
Performing stack manipulation while SP is set to an odd value leads to an address error. Figure 4.4
shows an example of operation when the SP value is odd.
SP
[Legend]
CCR :
PC :
R1L :
SP :
Note: This diagram illustrates an example in which the interrupt control mode is 0, in advanced mode.
Usage Note
SP set to H'FFFEFF
Condition code register
Program counter
General register R1L
Stack pointer
TRAPA instruction executed
Figure 4.4 Operation when SP Value Is Odd
(Address error occurred)
SP
Data saved above SP
CCR
PC
MOV.B R1L, @-ER7 executed
SP
Rev. 2.00 Jun. 28, 2007 Page 89 of 864
Contents of CCR lost
Section 4 Exception Handling
R1L
PC
REJ09B0341-0200
H'FFFEFA
H'FFFEFB
H'FFFEFC
H'FFFEFD
H'FFFEFE
H'FFFEFF
Address