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參數(shù)資料
| 型號： | μPD78P058 |
| 廠商： | NEC Corp. |
| 英文描述： | 8 Bit Single Chip Microcontrollers(8位單片微控制器) |
| 中文描述： | 8位單片機微控制器（8位單片微控制器） |
| 文件頁數(shù)： | 11/86頁 |
| 文件大?。?/td> | 502K |
| 代理商： | ΜPD78P058 |
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11
μ
PD78P054, 78P058
1. DIFFERENCES BETWEEN
μ
PD78P054, 78P058 AND MASK ROM VERSIONS
The
μ
PD78P054 and 78P058 are single-chip microcontrollers with an on-chip one-time writable 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 P60 to P63 pins, to the
same as those of mask ROM versions by setting the memory size switching register (IMS) and internal expansion
RAM size switching register (IXS).
Differences between the PROM versions (
μ
PD78P054 and 78P058) and mask ROM versions (
μ
PD78052, 78053,
78054, 78055, 78056, and 78058) are shown in Table 1-1.
Table 1-1. Differences between
μ
PD78P054, 78P058 and Mask ROM Versions
Item
μ
PD78P054, 78P058
One-time PROM/EPROM
Mask ROM Versions
Mask ROM
Internal ROM structure
Internal ROM capacity
μ
PD78P054 : 32 Kbytes
μ
PD78P058 : 60 Kbytes
μ
PD78052 : 16 Kbytes
μ
PD78053 : 24 Kbytes
μ
PD78054 : 32 Kbytes
μ
PD78055 : 40 Kbytes
μ
PD78056 : 48 Kbytes
μ
PD78058 : 60 Kbytes
Internal high-speed RAM capacity
1024 bytes
μ
PD78052
Other than
μ
PD78052 : 1024 bytes
: 512 bytes
Internal expansion RAM capacity
μ
PD78P054 : None
μ
PD78P058 : 1024 bytes
μ
PD78058
Other than
μ
PD78058 : None
: 1024 bytes
Change of internal ROM and internal
high-speed RAM capacity by memory
size switching register (IMS)
Can be changed
Note 1
Cannot be changed
Change of internal expansion RAM
capacity by internal expansion RAM
size switching register (IXS)
Can be changed
Note 2
Cannot be changed
IC pin
None
Provided
V
PP
pin
Provided
None
Pull-up resistor on-chip mask option
of P60 to P63 pins
None
Provided
Electrical specifications,
recommended soldering conditions
Refer to Data Sheet for each product.
Notes 1.
The internal PROM capacity and internal high-speed RAM capacity become as follows by RESET input.
Internal PROM capacity : 32 Kbytes (
μ
PD78P054), 60 Kbytes (
μ
PD78P058)
Internal high-speed RAM capacity : 1024 bytes
2.
The internal expansion RAM capacity becomes 1024 bytes by RESET input (
μ
PD78P058 only).
Caution
The PROM version and mask ROM version differ in noise tolerance and noise emission. When
replacing a PROM version with a mask ROM version when switching from experimental
production to mass production, make a thorough evaluation with a CS version (not ES version)
of the mask ROM version.
Remarks 1.
The
μ
PD78P054 is a PROM version of the
μ
PD78052, 78053, and 78054.
The
μ
PD78P058 is a PROM version of the
μ
PD78055, 78056, and 78058.
2.
The internal expansion RAM size switching register (IXS) is included only in the
μ
PD78058 and
78P058.
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