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參數(shù)資料
| 型號(hào)： | UPD78323GJ-5BJ |
| 廠商： | NEC Corp. |
| 英文描述： | 16/8-BIT SINGLE-CHIP MICROCONTROLLER |
| 中文描述： | 16/8-BIT單片機(jī) |
| 文件頁(yè)數(shù)： | 7/86頁(yè) |
| 文件大小： | 454K |
| 代理商： | UPD78323GJ-5BJ |
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7
μ
PD78323, 78324
DIFFERENCES BETWEEN
μ
PD78324 AND 78323
Internal ROM
Input
Input
/output
Port 4
(P40 to P47)
Port 5
(P50 to P57)
Port 9
(P90 to P93)
Memory expansion
mode register (MM)
Port 5 mode register
(PM5)
Item
I/O line
Product Name
Always P90 and P91 function as RD strobe and
WR strobe signal output, respectively.
Port 4 I/O mode is set as an 8-bit unit .
Port 5 I/O mode is set bit-wise.
Note
Maintenance product
μ
PD78324
μ
PD78323
32K bytes
None
16 (dual-function as analog input: 8)
39
21
Specifiable as I/O as an 8-bit unit.
Functions as multiplexed address/data buses
(AD0 to AD7) in the external memory expansion
mode.
Functions always as multiplexed address/data
buses.
Specifiable as I/O bit-wise.
Functions as address bus (A8 to A15) in the
external memory expansion mode.
Functions always as address bus.
Specifiable as I/O bit-wise.
In the external memory expansion mode, P90
and P91 function as RD strobe signal output
and WR strobe signal output, respectively. In
the external memory high-speed fetch mode,
P92 P93 function as TAS output and TMD out-
put respectively.
In the
μ
PD78324 emulation mode, turbo acces
acces manager (
μ
PD71P301)
Note
PA and PB pins
are controlled as port 4 and port 5 emulation
pins.
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