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AM27S191APC

Specifications

SKU: 437725

BUY AM27S191APC https://www.utsource.net/itm/p/437725.html
x4 PROM
Parameter Description Value
Device Type High-Speed CMOS 64K x 8-Bit Electrically Erasable PROM (EEPROM) AM27S191APC
Supply Voltage (Vcc) Operating voltage range 4.5V to 5.5V
Standby Current (Icc) Supply current in standby mode 10 μA (max)
Active Current (Icc) Supply current during read/write operations 30 mA (max)
Access Time (tAA) Access time from address valid to data valid 70 ns (max)
Write Cycle Time (tWC) Time required to complete a write cycle 5 ms (max)
Data Retention Minimum guaranteed data retention time 10 years
Operating Temperature Range of temperatures for normal operation -40°C to +85°C
Package Type Type of package 28-pin Plastic DIP
Pin Configuration Pin layout and functions See Pin Diagram

Instructions for Use

  1. Power Supply:

    • Ensure that the supply voltage (Vcc) is within the specified range of 4.5V to 5.5V.
    • Connect Vcc to the appropriate pin and ground (GND) to another pin.
  2. Addressing:

    • Apply the desired address to the address lines (A0-A15) to select the memory location.
    • Address lines should be stable before the access time (tAA) begins.
  3. Data Read:

    • To read data, apply the address and ensure the chip select (CS) and output enable (OE) pins are low.
    • Data will be available on the data lines (D0-D7) after the access time (tAA).
  4. Data Write:

    • To write data, apply the address and data to the appropriate lines.
    • Set the chip select (CS), write enable (WE), and output enable (OE) pins as required.
    • The write cycle time (tWC) must be observed to ensure the data is properly written.
  5. Standby Mode:

    • To enter standby mode, set the chip select (CS) pin high.
    • This reduces power consumption to the standby current level.
  6. Temperature Considerations:

    • Ensure the device operates within the specified temperature range (-40°C to +85°C) to avoid damage or data corruption.
  7. Handling Precautions:

    • Handle the device with care to avoid static discharge, which can damage the internal circuitry.
    • Use proper ESD protection when handling the device.

Pin Diagram

Pin Number Pin Name Function
1 A15 Address Line 15
2 A14 Address Line 14
3 A13 Address Line 13
4 A12 Address Line 12
5 A11 Address Line 11
6 A10 Address Line 10
7 A9 Address Line 9
8 GND Ground
9 A8 Address Line 8
10 A7 Address Line 7
11 A6 Address Line 6
12 A5 Address Line 5
13 A4 Address Line 4
14 A3 Address Line 3
15 A2 Address Line 2
16 A1 Address Line 1
17 A0 Address Line 0
18 D0 Data Line 0
19 D1 Data Line 1
20 D2 Data Line 2
21 D3 Data Line 3
22 D4 Data Line 4
23 D5 Data Line 5
24 D6 Data Line 6
25 D7 Data Line 7
26 OE Output Enable
27 WE Write Enable
28 CS Chip Select
(For reference only)

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