HD6473258P10 Renesas Electronics America, HD6473258P10 Datasheet - Page 125
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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6.2.2 Port 3 Data Register (P3DR)
Bit
Initial value
Read/Write
When the parallel handshaking interface is used for output (P3DDR = H'FF), P3DR stores the
output data. If port 3 is read, the P3DR data are obtained.
When the parallel handshaking interface is used for input (P3DDR = H'00), P3DR has separate
latches for reading and writing. The data written in P3DR control the MOS input pull-ups. When
P3DR is read, data are obtained from the separate input latches if the input strobe flag (ISF) is set to
1, or directly from the input pins if ISF is cleared to 0.
See Section 5.4, Port 3 for further information.
6.2.3 Handshake Control/Status Register (HCSR)
Bit
Initial value
Read/Write
HCSR is an 8-bit register containing control and status information for parallel handshaking. In the
reset and hardware standby modes, HCSR is initialized to H'03. In the software standby mode it
retains its previous value.
Bit 7—Input Strobe Flag (ISF): Indicates that the input strobe signal (IS) has gone low.
ISF is a read-only bit that is set and cleared by hardware. It is set by strobe input. It is cleared when
the port 3 data register is written or read. (The handshake control/status register must be read first.)
Bit 7
ISF
0
1
Description
To clear ISF, the CPU must read HCSR after ISF has been
set to 1, then read or write the port 3 data register (P3DR).
ISF is set to 1 on the falling edge of IS.
R/W
P3
ISF
R
7
0
7
0
7
R/W
R/W
ISIE
P3
6
0
6
0
6
R/W
OSE
R/W
P3
5
0
5
0
5
116
R/W
OSS
R/W
P3
4
0
4
0
4
R/W
R/W
LTE
P3
3
0
3
0
3
R/W
R/W
BSE
P3
2
0
2
0
2
(Initial value)
R/W
P3
—
—
1
0
1
1
1
R/W
P3
—
—
0
0
0
1
0
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