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參數(shù)資料
| 型號(hào)： | μPD78P078Y |
| 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(jī)微控制器（8位單片微控制器） |
| 文件頁數(shù)： | 26/84頁 |
| 文件大?。?/td> | 472K |
| 代理商： | ΜPD78P078Y |
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m
PD78P078Y
26
Pin
RESET
V
PP
V
DD
CE
OE
PGM
D0 to D7
Operating Mode
Page data latch
L
+12.5 V
+6.5 V
H
L
H
Data input
Page write
H
H
L
High-impedance
Byte write
L
H
L
Data input
Program verify
L
L
H
Data output
Program inhibit
￥
￥
H
H
High-impedance
L
L
Read
+5 V
+5 V
L
L
H
Data output
Output disable
L
H
￥
￥
High-impedance
Standby
H
￥
High-impedance
￥
: L or H
5.
PROM PROGRAMMING
The
m
PD78P078Y has an on-chip 60-Kbyte PROM as a program memory. For programming, set the PROM
programming mode with the V
PP
and RESET pins. For the connection of unused pins, refer to
“PIN CONFIGURATIONS
(2) PROM programming mode.”
Caution Programs must be written in addresses 0000H to EFFFH (The last address EFFFH must be specified).
They cannot be written by a PROM programmer which cannot specify the write address.
5.1
Operating Modes
When +5 V or +12.5 V is applied to the V
PP
pin and a low-level signal is applied to the RESET pin, the PROM
programming mode is set. This mode will become the operating mode as shown in Table 5-1 when the CE, OE and
PGM pins are set as shown.
Further, when the read mode is set, it is possible to read the contents of the PROM.
Table 5-1. Operating Modes of PROM Programming
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