HD6475328-CP10 HITACHI [Hitachi Semiconductor], HD6475328-CP10 Datasheet - Page 162
HD6475328-CP10
Manufacturer Part Number
HD6475328-CP10
Description
original Hitachi CMOS microcomputer unit (MCU)
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
1.HD6475328-CP10.pdf
(459 pages)
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Bit 3
BRLE
0
1
Bits 2 to 0—Reserved: These bits cannot be modified and are always read as “1.”
9.2.3 Pin Functions in Each Mode
Port 1 operates differently in the expanded modes (modes 1, 2, 3, and 4) and the single-chip mode
(mode 7). Table 9-3 explains how the pin functions are selected in the expanded mode. Table 9-4
explains how the pin functions are selected in the single-chip mode.
Table 9-3 Port 1 Pin Functions in Expanded Modes
Pin
P1
P1
P1
7
6
5
/ TMO The function depends on output select bits 3 to 0 (OS3 to OS0) of the 8-bit timer
/ IRQ
/ IRQ
1
0
Description
P1
P1
Functions and How they are Selected
control/status register (TCSR) and on the P1
OS3 to OS0
P1
Pin function
The function depends on the IRQ
IRQ
P1
Pin function
The function depends on the IRQ
IRQ
P1
Pin function
3
3
7
6
5
and P1
functions as the input pin. P1
DDR
DDR
DDR
1
0
E
E
2
function as input/output pins.
P1
P1
P1
All four bits are “0”
7
6
5
0
0
0
input
input
input
0
0
P1
P1
P1
7
6
5
2
output
output
output
1
1
1
0
1
E bit and the P1
E bit and the P1
functions as the output pin.
145
At least one bit is “1”
7
DDR bit as follows:
0
0
0
TMO output
IRQ
IRQ
6
5
DDR bit as follows:
DDR bit as follows:
1
0
1
1
input
input
1
1
1
(Initial value)
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