Contents
Features. . . . 1 Pin Assignment . . . 1 Block Diagram 1 Instruction Set 2 Absolute Maximum Ratings . . . . 2 Recommended Operating Conditions. . . . 2 Rewriting Times . . 2 Pin Capacitance. . 3 DC Electrical Characteristics . . 3 AC Electrical Characteristics. . . 4 Operation . . 5 Three-wire Interface ·DI-DO Direct Connecting . . 8 Dimensions . . . . 8 Ordering Information 9 Characteristics . . 10 Frequently Asked Questions. 14
CMOS 2K/4K-bit SERIAL E2PROM
S-29255A/29355A
2
The S-29255A (2K-bit) and S-29355A (4K-bit) are E PROMs characterized by a wide operating voltage range and low power consumption. The organization is 128-word×16-bit and 256-word×16bit, respectively. They are easily interfaced with a serial port because the instruction is composed of eight-bit units. Also, through the RESET pin, erroneous writing at power on/off can be avoided.
Features
• S-29255A : S-29355A : 2K-bit, instruction code conforming to M6M80021 4K-bit, instruction code conforming to M6M80041 • • • • • • Easy interface with serial port Memory protection by RESET pin Rewritings: 105 times/word Data retention: 10 years Operating temperature: -40 °C to+85 °C Package: 8-pin DIP/SOP, bare chip
• Low power consumption Operating: 2. 0 mA max. Standby: 1. 0 µA max. • Wide operating voltage range Write: 2. 7 to 6. 5 V Read: 1. 8 to 6. 5 V
Pin Assignment
8-pin DIP Top view CS SK DI DO VCC RDY/BUSY R...
S29255A PDF File
