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參數(shù)資料
| 型號： | μPD78F0034 |
| 廠商： | NEC Corp. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash |
| 中文描述： | 8位微控制器與2/4/8K字節(jié)在系統(tǒng)可編程閃存 |
| 文件頁數(shù)： | 10/52頁 |
| 文件大小： | 393K |
| 代理商： | ΜPD78F0034 |
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μ
PD78F0034
10
Preliminary Data Sheet
1. DIFFERENCES BETWEEN
μ
PD78F0034 AND MASK ROM VERSIONS
The
μ
PD78F0034 is a product provided with a flash memory which enables on-board writing, erasing, and
rewriting of programs with device mounted on target system.
The functions of the
μ
PD78F0034 (except the functions specified for flash memory) can be made the same as
those of the mask ROM versions by setting the memory size switching register (IMS).
Table 1-1 shows the differences between the flash memory version (
μ
PD78F0034) and the mask ROM versions
(
μ
PD780031, 780032, 780033, and 780034).
Table 1-1. Differences between
μ
PD78F0034 and Mask ROM Versions
Item
μ
PD78F0034
Mask ROM Versions
Internal ROM structure
Flash memory
Mask ROM
Internal ROM capacity
32 Kbytes
μ
PD780031 : 8 Kbytes
μ
PD780032 : 16 Kbytes
μ
PD780033 : 24 Kbytes
μ
PD780034 : 32 Kbytes
Internal high-speed RAM capacity
1024 bytes
μ
PD780031 : 512 bytes
μ
PD780032 : 512 bytes
μ
PD780033 : 1024 bytes
μ
PD780034 : 1024 bytes
Internal ROM and internal high-speed
RAM capacity changeable/not changeable
with memory size switching register (IMS)
Changeable
Note
Not changeable
IC pin
Not provided
Provided
V
PP
pin
Provided
Not provided
Power supply voltage
V
DD
= 2.7 to 5.5 V
V
DD
= 1.8 to 5.5 V
Electrical specifications,
recommended soldering conditions
Refer to the data sheet of individual products.
Note
Flash memory is set to 32 Kbytes and internal high-speed RAM is set to 1024 bytes by RESET input.
Caution
The flash memory version and mask ROM version differ in noise tolerance and noise
emission. When replacing a flash memory 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.
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