D12312SVF20V Renesas Electronics America, D12312SVF20V Datasheet - Page 141

• Manufacturer Part Number: D12312SVF20V
• Description: IC H8S/2312S MCU ROMLESS 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12312SVF20V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• For Use With: EDK2329 - DEV EVALUATION KIT H8S/2329
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

4.7
When accessing word data or longword data, the 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 4.5 shows an example of what
happens when the SP value is odd.
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
PUSH.W
PUSH.L
POP.W
POP.L
SP
Stack pointer
Program counter
Notes on Use of the Stack
mode.
SP set to H'FFFEFF
Rn
ERn
Rn
ERn
TRAP instruction executed
Figure 4.5 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
Rev.7.00 Feb. 14, 2007 page 107 of 1108
SP
Contents of CCR lost
Section 4 Exception Handling
R1L
PC
REJ09B0089-0700
H'FFFEFA
H'FFFEFB
H'FFFEFC
H'FFFEFD