Details

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BUY MB8421-90LP https://www.utsource.net/itm/p/12608252.html

Parameter	Description	Value
Part Number	Full part number	MB8421-90LP
Type	Type of device	SRAM (Static Random Access Memory)
Capacity	Total memory capacity	256 Kbits (32 K x 8)
Vcc Operating Voltage	Supply voltage range	2.7 V to 3.6 V
Vpp Programming Voltage	Programming voltage (if applicable)	Not applicable (SRAM)
Icc Supply Current	Supply current at active mode	5 mA (typical)
Icc Standby Current	Supply current at standby mode	1 渭A (typical)
Access Time	Time required for read/write operations	55 ns (maximum)
Data Retention Time	Time data is retained without power	10 years (at 25掳C)
Operating Temperature	Temperature range for operation	-40掳C to +85掳C
Storage Temperature	Temperature range for storage	-55掳C to +125掳C
Package Type	Type of package	SOP-8 (Small Outline Package)
Pin Configuration	Pin layout	See pin diagram below
Ordering Information	Additional information for ordering	Check datasheet for details

Pin Diagram

Pin Number	Pin Name	Function
1	A0	Address input bit 0
2	A1	Address input bit 1
3	A2	Address input bit 2
4	A3	Address input bit 3
5	A4	Address input bit 4
6	A5	Address input bit 5
7	A6	Address input bit 6
8	A7	Address input bit 7
9	A8	Address input bit 8
10	A9	Address input bit 9
11	A10	Address input bit 10
12	A11	Address input bit 11
13	A12	Address input bit 12
14	A13	Address input bit 13
15	A14	Address input bit 14
16	Vss	Ground
17	Vcc	Power supply
18	OE	Output enable
19	WE	Write enable
20	CE	Chip enable
21	D0	Data input/output bit 0
22	D1	Data input/output bit 1
23	D2	Data input/output bit 2
24	D3	Data input/output bit 3
25	D4	Data input/output bit 4
26	D5	Data input/output bit 5
27	D6	Data input/output bit 6
28	D7	Data input/output bit 7

Instructions

1. Power Supply: Connect Vcc to the positive power supply (2.7 V to 3.6 V) and Vss to ground.
2. Addressing: Apply the desired address to the address lines (A0-A14).
3. Data Input/Output: Data is read from or written to the data lines (D0-D7) based on the address provided.
4. Control Signals:
   • CE (Chip Enable): Low to enable the chip.
   • OE (Output Enable): Low to enable data output.
   • WE (Write Enable): Low to write data to the selected address.
5. Timing: Ensure that the access time (55 ns maximum) is respected to avoid data corruption.
6. Temperature: Operate within the specified temperature range (-40掳C to +85掳C) to ensure reliable performance.
7. Storage: Store the device within the storage temperature range (-55掳C to +125掳C) to prevent damage.

For more detailed information, refer to the datasheet provided by the manufacturer.

(For reference only)