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參數資料
| 型號： | μPD78P0308 |
| 廠商： | NEC Corp. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8 Bit Single Chip Microcontrollers |
| 中文描述： | 8位單片機微控制器 |
| 文件頁數： | 14/70頁 |
| 文件大?。?/td> | 556K |
| 代理商： | ΜPD78P0308 |
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14
μ
PD78P0308
Preliminary Data Sheet
1.
DIFFERENCES BETWEEN THE
μ
PD78P0308 AND MASK ROM VERSIONS
The
μ
PD78P0308 is a single-chip microcontroller with an on-chip one-time PROM or with an on-chip EPROM, which
has program write, erasure, and rewrite capability.
It is possible to make all the functions except for PROM specification, and mask option of LCD drive power supply
split resistor, the same as those of mask ROM versions by setting the memory size switching register (IMS).
Difference between the PROM version (
μ
PD78P0308) and mask ROM versions (
μ
PD780306, 780308) are shown
in Table 1-1.
Table 1-1. Differences between the
μ
PD78P0308 and Mask ROM Versions
Item
μ
PD78P0308
Mask ROM Versions
Internal ROM configuration
One-time PROM/EPROM
Mask ROM
Internal ROM capacity
60 Kbytes
μ
PD780306:
48 Kbytes
μ
PD780308:
60 Kbytes
Internal ROM capacity change by the
Possible
Note
Impossible
memory size switching register (IMS)
IC pin
No
Yes
V
PP
pin
Yes
No
Mask options of LCD drive power supply
split resistor
None
Available
Electrical specifications, recommended
soldering conditions
Refer to data sheet of the individual product.
Note
The internal PROM capacity is set to 60 Kbytes by RESET input.
Caution
There are differences in noise immunity and noise radiation between the PROM and mask ROM
versions. When pre-producing an application set with the PROM version and then mass-producing
it with the mask ROM version, be sure to conduct sufficient evaluations for the set using consumer
samples (not engineering samples) of the mask ROM version.
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