Details

---

BUY AT28C64-15SC https://www.utsource.net/itm/p/790670.html
64K 8K x 8 CMOS E2PROM

Parameter	Description	Value
Device	Device Type	AT28C64-15SC
Package	Package Type	28-Pin Plastic DIP
Operating Voltage (Vcc)	Supply Voltage Range	4.5V to 5.5V
Memory Capacity	Total Memory Size	64 Kbits (8K x 8)
Access Time	Maximum Access Time	150 ns
Write Cycle Time	Minimum Write Cycle Time	5 ms
Endurance	Write/Erasure Cycles	1,000,000 cycles
Data Retention	Data Retention Time	10 years
Operating Temperature	Operating Temperature Range	-40°C to +85°C
Storage Temperature	Storage Temperature Range	-65°C to +150°C
Standby Current	Standby Current (Typical)	1 μA
Active Current	Active Current (Typical)	20 mA
Output Drive	Output Drive Capability	±15 mA
Pin Configuration	Pin 1: A13, Pin 2: A12, ..., Pin 28: Vss	Refer to datasheet

Instructions for Use:

1. Power Supply:

   • Connect Vcc to a stable 5V supply.
   • Connect Vss to ground.

2. Addressing:

   • Apply the desired address to the address lines (A0-A12).
   • Ensure all address lines are properly connected and stable before initiating read or write operations.

3. Data Input/Output:

   • For write operations, apply the data to the data lines (D0-D7) and assert the Write Enable (WE) signal.
   • For read operations, ensure the Output Enable (OE) signal is active to allow data to be read from the data lines.

4. Control Signals:

   • Chip Select (CS): Active low. Must be low to enable the device.
   • Output Enable (OE): Active low. Enables data output when low.
   • Write Enable (WE): Active low. Initiates a write operation when low.
   • Write Protect (WP): Active high. When high, write operations are inhibited.

5. Write Operation:

   • Set CS low to select the device.
   • Apply the desired address to the address lines.
   • Apply the data to the data lines.
   • Assert WE low to initiate the write cycle.
   • Hold WE low for at least 5 ms to complete the write cycle.
   • Deassert WE to complete the operation.

6. Read Operation:

   • Set CS low to select the device.
   • Apply the desired address to the address lines.
   • Assert OE low to enable data output.
   • Read the data from the data lines.

7. Power-On Reset:

   • Ensure a clean power-on sequence to avoid undefined states.
   • It is recommended to include a power-on reset circuit to initialize the device properly.

8. Handling Precautions:

   • Handle the device with care to avoid static damage.
   • Ensure proper heat dissipation if operating at high temperatures or under continuous load.

9. Storage:

   • Store the device in a dry, cool environment to prevent moisture damage.
   • Follow ESD (Electrostatic Discharge) precautions during handling and storage.

For detailed specifications and additional information, refer to the official AT28C64-15SC datasheet provided by the manufacturer.

(For reference only)