參數(shù)資料
型號(hào)： UPD75P66
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(yè)數(shù)： 14/40頁(yè)
文件大?。?/td> 320K
代理商： UPD75P66
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
UPD75P3036GC-3B9 DIODE ZENER SINGLE 500mW 56Vz 2.2mA-Izt 0.05 0.1uA-Ir 39Vr DO35-GLASS 5K/AMMO
UPD75P336GC-3B9 DIODE ZENER SINGLE 500mW 56Vz 2.2mA-Izt 0.05 0.1uA-Ir 39Vr DO35-GLASS 5K/REEL
UPD75P238GJ-5BG RECTIFIER BRIDGE 1A 1000V 50A-ifsm 1.1V-vf 10uA-ir DFM 50/TUBE
UPD75P0016GB-3BS-MTX RECTIFIER BRIDGE 1.5A 100V 50A-ifsm 1V-vf 5uA-ir WOG 1K/BULK
UPD75P0116GB-3BS-MTX RECTIFIER BRIDGE 1.5A 200V 50A-ifsm 1V-vf 5uA-ir WOG 1K/BULK
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(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*