HD6473258P10 Renesas Electronics America, HD6473258P10 Datasheet - Page 37
HD6473258P10
Manufacturer Part Number
HD6473258P10
Description
IC H8 MCU OTP 32K 64DIP
Manufacturer
Renesas Electronics America
Series
H8® H8/325r
Datasheet
1.HD6413238F10.pdf
(301 pages)
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
-
Available stocks
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Part Number:
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3.2 Register Configuration
Figure 3-1 shows the register structure of the CPU. There are two groups of registers: the general
registers and control registers.
3.2.1 General Registers
All the general registers can be used as both data registers and address registers. When used as
address registers, the general registers are accessed as 16-bit registers (R0 to R7). When used as
data registers, they can be accessed as 16-bit registers, or the high and low bytes can be accessed
separately as 8-bit registers.
R7 also functions as the stack pointer, used implicitly by hardware in processing interrupts and
subroutine calls. In assembly-language coding, R7 can also be denoted by the letters SP. As
indicated in figure 3-2, R7 (SP) points to the top of the stack.
15
7
R0H
R1H
R2H
R3H
R4H
R5H
R6H
R7H
CCR
PC
(SP)
0
7
7
Figure 3-1. CPU Registers
I
U
5
H
R0L
R1L
R2L
R3L
R4L
R5L
R6L
R7L
U
3
N
Z
2
1
V
0
C
0
28
0
SP: Stack Pointer
PC: Program Counter
CCR: Condition Code Register
Carry flag
Overflow flag
Zero flag
Negative flag
Half-carry flag
Interrupt mask bit
User bit
User bit
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