R5F61668RN50FPV Renesas Electronics America, R5F61668RN50FPV Datasheet - Page 162

• Manufacturer Part Number: R5F61668RN50FPV
• Description: IC H8SX/1668 MCU FLASH 144LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of R5F61668RN50FPV

• Core Processor: H8SX
• Core Size: 16/32-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, SmartCard, USB
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 92
• Program Memory Size: 1MB (1M x 8)
• Program Memory Type: FLASH
• Ram Size: 56K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• For Use With: R0K561668S000BE - KIT STARTER FOR H8SX/1668R0K561664S001BE - KIT STARTER FOR H8SX/1651HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 6 Exception Handling
6.9
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:
Use the following instructions to restore registers:
Performing stack manipulation while SP is set to an odd value leads to an address error. Figure 6.4
shows an example of operation when the SP value is odd.
Rev. 2.00 Sep. 24, 2008 Page 128 of 1468
REJ09B0412-0200
PUSH.W
PUSH.L
POP.W
POP.L
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
Rn
ERn
Rn
ERn
Condition code register
Program counter
General register R1L
Stack pointer
(or MOV.W Rn, @-SP)
(or MOV.L ERn, @-SP)
(or MOV.W @SP+, Rn)
(or MOV.L @SP+, ERn)
TRAPA instruction executed
Figure 6.4 Operation when SP Value is Odd
(Address error occurred)
SP
Data saved above SP
CCR
PC
MOV.B R1L, @-ER7 executed
SP
Contents of CCR lost
R1L
PC
H'FFFEFA
H'FFFEFB
H'FFFEFC
H'FFFEFD
H'FFFEFE
H'FFFEFF
Address