參數(shù)資料
型號： μPD75P3018A
廠商： NEC Corp.
英文描述： 4 Bit Single Chip Microcontrollers(4位單片微控制器)
中文描述： 4位單片微控制器（4位單片微控制器）
文件頁數(shù)： 15/60頁
文件大?。?/td> 337K
代理商： ΜPD75P3018A
μPD75P3018A
15
5.DIFFERENCES BETWEEN
m
PD75P3018A AND
m
PD753012A, 753016A, AND 753017A
The
m
PD75P3018A replaces the internal mask ROM in the
m
PD753012A, 753016A, and 753017A with a one-time PROM
and features expanded ROM capacity. The
m
PD75P3018A’s Mk I mode supports the Mk I mode in the
m
PD753012A,
753016A, and 753017A and the
m
PD75P3018A’s Mk II mode supports the Mk II mode in the
m
PD753012A, 753016A, and
753017A.
Table 5-1 lists differences among the
m
PD75P3018A and the
m
PD753012A, 753016A, and 753017A. Be sure to check
the differences among these products before using them with PROMs for debugging or prototype testing of application
systems or, later, when using them with a mask ROM for full-scale production.
For the CPU functions and internal hardwares, refer to
m
PD753017 User's Manual (U11282E).
Table 5-1.
Differences between
m
PD75P3018A and
m
PD753012A, 753016A, and 753017A
Item
m
PD753012A
m
PD753016A
m
PD753017A
m
PD75P3018A
Program counter
14 bits
15 bits
Program memory (bytes)
Mask ROM
One-time PROM
During
Mk I mode
12288
16384
16384
16384
During
Mk II mode
12288
16384
24576
32768
Data memory (x 4 bits)
1024
Mask options
Pull-up resistor for
PORT4 and PORT5
Yes (Can be specified whether to incorporate or not)
No (Cannot incorporate)
LCD split resistor
Feedback resistor
for subsystem clock
Yes (Can be specified whether to use or not)
No (used)
Wait time
during RESET
Yes (Can be specified either 2
17
/f
X
or 2
15
/f
X
)
Note
No (Fixed at 2
15
/f
X
)
Note
Pin configuration
Pin Nos. 29 to 32
P40 to P43
P40/D0 to P43/D3
Pin Nos. 34 to 37
P50 to P53
P50/D4 to P53/D7
Pin No. 50
P30/LCDCL
P30/LCDCL/MD0
Pin No. 51
P31/SYNC
P31/SYNC/MD1
Pin Nos. 52 and 53
P32, P33
P32/MD2, P33/MD3
Pin No. 57
IC
V
PP
Other
Noise resistance and noise radiation may differ due to the different circuit sizes and mask
layouts.
Note
For 2
17
/f
X
, during 6.0-MHz operation is 21.8 ms, and during 4.19-MHz operation is 31.3 ms.
For 2
15
/f
X
, during 6.0-MHz operation is 5.46 ms, and during 4.19-MHz operation is 7.81 ms.
Caution
Noise resistance and noise radiation are different in PROM and mask ROMs. In transferring to mask
ROM version from the PROM version in a process between prototype development and full production,
be sure to fully evaluate the mask ROM version’s CS (not ES).
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