Datasheet > 存储 > OTP ROM> 37LV65-ISN

37LV65-ISN

更新时间： 2024-02-17 01:52:18

品牌	Logo	应用领域
美国微芯 - MICROCHIP		可编程只读存储器电动程控只读存储器
页数	文件大小	规格书
12页	92K
描述
36K, 64K, and 128K Serial EPROM Family

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37LV65-ISN 数据手册

37LV36/65/128

FIGURE 11-3: ENTER AND EXIT PROGRAMMING MODES

Enter Mode

Exit Mode

VCCP

VPP1

VCC

VPP

V^PP2

VPP

V SS

VCCP

VPP2

TRPP

TSVC

TFPP

THVC

VCC

TSVC

1 ms

CLK

V SS

VSS

DATA

RESET/OE

CLK

TSVCE

TSVOE

RESET/OE

FIGURE 11-4: PROGRAMMING CYCLE OVERVIEW (NO VERIFY UNTIL ENTIRE ARRAY IS

PROGRAMMED)

VCC = VCCP

VCC

VPP1

VPP = VPP2

500 µs

Programming

Mode

Enter

500 µs

Programming

Mode

500 µs

Programming

Mode

VPP

Programming Programming

Mode

CLK

**Load

Word 1

CE low to clear

data latches

**Load

Word 2

**Load

Word 3

**Load

Word 5

Clock Increments

Address Counter

**Load

Word 4

2 CLKS

RESET/OE

High if RESET/OE configured

CEO

Low if RESET/OE configured

** 32 Clocks

*Note: The CEO pin is high impedance when VPP = VPP1

FIGURE 11-5: DETAILS OF PROGRAM CYCLE

TRPP

TFPP

Clear PROM

Internal Data

Latches

Load PROM

Internal

Data Latches

VPP

TPGM

CLK

THIC

TSDP

THDP

TSIC

32 (Last Bit)

DATA

TSCC

THOV

TLCE

RESET/OE

Program

Pulse

Increment

Word

Counter

*Note: The programmer must float the data pin while

CE is low to avoid bus contention

DS21109E-page 8

1996 Microchip Technology Inc.

1...5 6 789 10 11 12

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