Details

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BUY M27C4002-70C1 https://www.utsource.net/itm/p/12608495.html

Parameter	Description	Value
Device Type	EPROM (Erasable Programmable ROM)
Manufacturer	Macronix
Part Number	M27C4002-70C1
Memory Size	512 Kbit	64K x 8
Vcc Operating Voltage	Supply Voltage	4.5V to 5.5V
Vpp Programming Voltage	Programming Voltage	12.0V 卤 0.5V
Access Time	Typical Access Time	70 ns
Data Retention	Data Retention Time	10 years
Operating Temperature	Industrial Range	-40掳C to +85掳C
Package Type	DIP (Dual In-Line Package)	28-Pin
Programming Method	UV Erasable, Electrically Programmable
Write Cycle Time	Time to Program a Byte	1 ms
Endurance	Write/Erase Cycles	1000 cycles
Storage Temperature	Storage Temperature Range	-65掳C to +150掳C
Pin Configuration	Pin 1: A0, Pin 2: A1, ..., Pin 28: Vss	See datasheet for full details

Instructions for Use:

1. Power Supply:

   • Connect Vcc to the power supply (4.5V to 5.5V).
   • Connect Vpp to the programming voltage (12.0V 卤 0.5V) during programming.
   • Ground Vss.

2. Addressing:

   • Apply the desired address to the address lines (A0 to A15).

3. Data Input/Output:

   • For reading, connect the data lines (D0 to D7) to the system bus.
   • For writing, apply the data to be programmed to the data lines (D0 to D7).

4. Programming:

   • Apply Vpp to the appropriate pin.
   • Set the chip select (CS) and output enable (OE) pins as required.
   • Apply the address and data for the byte to be programmed.
   • Wait for the write cycle time (1 ms) before applying the next address/data pair.

5. Erasing:

   • Expose the device to UV light for at least 20 minutes to erase the contents.

6. Handling:

   • Handle with care to avoid static discharge.
   • Store in a dry, cool place when not in use.

For detailed pin configurations and timing diagrams, refer to the datasheet provided by Macronix.

(For reference only)