- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376435 > UPD75P66CS-001 (NEC Corp.) 4-Bit, Single-Chip, One-Time Programmable (OTP) CMOS Microcomputer With Comparator PDF資料下載
參數(shù)資料
| 型號： | UPD75P66CS-001 |
| 廠商： | NEC Corp. |
| 英文描述： | 4-Bit, Single-Chip, One-Time Programmable (OTP) CMOS Microcomputer With Comparator |
| 中文描述： | 4位，單芯片，一次性可編程（OTP）的CMOS微機(jī)與比較 |
| 文件頁數(shù)： | 14/40頁 |
| 文件大?。?/td> | 320K |
| 代理商： | UPD75P66CS-001 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁當(dāng)前第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁
14
μ
PD75P048
3. PROM (PROGRAM MEMORY) WRITE AND VERIFY
The
μ
PD75P048 contains 8064 bytes of PROM. The following table shows the pin functions during the write
and verify cycles. Note that it is not necessary to enter an address, because the address is updated by pulsing
the X1 clock pins.
Pin Name
V
PP
X1, X2
MD0 - MD3 (P30 - P33)
P40 - P43 (lower 4 bits)
P50 - P53 (higher 4 bits)
V
DD
Function
Normally 2.7 to 6 V; 12.5 V is applied during write/verify
After a write/verify write, the X1 and X2 clock pins are
pulsed. The inverted signal of the X1 should be input to the
X2.
Note that these pins are also pulsed during a read.
Operation mode selection pins.
8-bit data input/output pins for write and verify
Supply voltage.
Normally 2.7 to 6 V; 6 V is applied during write/verify
Caution The
μ
PD75P048CW/GC do not have a UV erase window, thus the PROM contents cannot be erased
with ultra-violet ray.
3.1 PROM WRITE AND VERIFY OPERATION MODE
When 6 V and 12.5 V are applied to the V
DD
and V
PP
pins, respectively, the PROM is placed in the write/verify
mode. The operation is selected by the MD0 to MD3 pins, as shown in the table.
The other pins should be returned to V
SS
potential via pull-down resistors.
Operation Mode Specification
V
PP
+12.5 V
V
DD
+6 V
MD0
H
L
L
H
MD1
L
H
L
×
MD2
H
H
H
H
MD3
L
H
H
H
Operation Mode
Clear program memory address to 0
Write mode
Verify mode
Program inhibit
×
: Don’t care.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD75P56CS-012 | 4-Bit, Single-Chip, One-Time Programmable (OTP) CMOS Microcomputer With Comparator |
| UPD75517GF-xxx-3B9 | 4 BIT SINGLE-CHIP MICROCOMPUTER |
| UPD75P3018GK-BE9 | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD75P328 | 4 BIT SINGLE CHIP MICRO COMPUTER WITH LCD CONTROLLER/ DRIVER AND A/D CONVERTER |
| UPD765A | Single/Double Density Floppy-Disk Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD765AC | 制造商:NEC Electronics Corporation 功能描述:DISK CONTROLLER, 40 Pin, DIP |
| UPD765AC-2 | 制造商:NEC Electronics Corporation 功能描述:DISK CONTROLLER, 40 Pin, DIP |
| UPD76F0107GC(A)-8EU-A | 制造商:Renesas Electronics Corporation 功能描述: |
| UPD76F0108GC(A)-UEU-AX | 制造商:Renesas Electronics Corporation 功能描述: |
| UPD76F0108GC(A)-UEU-SSA-AX | 制造商:Renesas Electronics Corporation 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。