HD6473258P10 Renesas Electronics America, HD6473258P10 Datasheet - Page 85

• Manufacturer Part Number: HD6473258P10
• Description: IC H8 MCU OTP 32K 64DIP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/325r

Specifications of HD6473258P10

• Core Processor: H8/300
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: SCI, UART/USART
• Number Of I /o: 53
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-DIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Peripherals: -

Although the CCR consists of only one byte, it is treated as word data when pushed on the stack. In
the hardware interrupt exception-handling sequence, two identical CCR bytes are pushed onto the
stack to make a complete word. When popped from the stack by an RTE instruction, the CCR is
loaded from the byte stored at the even address. The byte stored at the odd address is ignored.
SP
H'FEFF set in SP
PC
PC
SP :
R1
Figure 4-7. Example of Damage Caused by Setting an Odd Address in R7
H
L
L
: Upper byte of program counter
:
:
Lower byte of program counter
Stack pointer
General register
BSR instruction
SP
PC is improperly stored
beyond top of stack
PC
PC
76
H
L
MOV.B R1L, @–R7
SP
PC is lost
PC
R1
H
Figure. 4-7
L
L
H'FEFC
H'FEFD
H'FEFF