HD6473258P10 Renesas Electronics America, HD6473258P10 Datasheet - Page 142
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
-
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These registers are written and read as follows:
• Register Write
• Register Read
Programs that access these registers should normally use word access. Equivalently, they may
access first the upper byte, then the lower byte by two consecutive byte accesses. Data will not be
transferred correctly if the bytes are accessed in reverse order, if only one byte is accessed, or if the
upper and lower bytes are accessed separately and another register is accessed in between, altering
the value in TEMP.
Coding Examples
To write the contents of general register R0 to OCRA:
To transfer the ICR contents to general register R0:
Figure 7-3 shows the data flow when the FRC is accessed. The other registers are accessed in the
same way.
When the CPU writes to the upper byte, the byte of write data is placed in TEMP. Next, when the
CPU writes to the lower byte, this byte of data is combined with the byte in TEMP and all 16 bits
are written in the register simultaneously.
When the CPU reads the upper byte, the upper byte of data is sent to the CPU and the lower byte
is placed in TEMP. When the CPU reads the lower byte, it receives the value in TEMP.
(As an exception, when the CPU reads OCRA or OCRB, it reads both the upper and lower bytes
directly, without using TEMP.)
134
MOV.W
MOV.W
R0, @OCRA
@ICR, R0
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