Technical Summary: M29W160B 16 Mbit Flash Memory

M29W160B 16 Mbit (2Mb x8 or 1Mb x16) Flash Memory

Overview

The M29W160B is a high-performance 16 Mbit non-volatile flash memory device, organized as either 2 Megabits x8 or 1 Megabit x16. Manufactured using advanced CMOS technology, it offers fast access times, low power consumption, and high reliability, making it suitable for a wide range of embedded applications. The device supports both uniform sector architecture and flexible erase capabilities, enabling efficient data storage and retrieval.

Key Features

Memory Configuration: 16 Mbit (2Mb x8 or 1Mb x16)
Supply Voltage: 2.7V to 3.6V (single power supply)
Access Time: 70 ns, 90 ns, and 120 ns options
Sector Architecture: Uniform 32 KB sectors (512 sectors total)
Erase/Program Operations:
- Chip erase, sector erase, and byte/word program operations
- Fast sector erase time (typical 1 second)
- Fast byte/word program time (typical 20 µs)
Low Power Consumption:
- Active read current: 20 mA (typical)
- Standby current: 1 µA (typical)
Endurance: 100,000 erase/program cycles per sector
Data Retention: 20 years minimum
Hardware & Software Protection:
- Block protection via lock/unlock commands
- WP# (Write Protect) pin for hardware protection
Compatibility: JEDEC-standard commands and pinout

Applications

The M29W160B is designed for embedded systems requiring reliable, high-speed non-volatile storage. Common applications include:

Consumer Electronics: Set-top boxes, digital TVs, gaming consoles
Automotive Systems: Infotainment, instrument clusters, telematics
Industrial Control: PLCs, automation controllers, data loggers
Networking Equipment: Routers, switches, modems
Computing: BIOS storage, firmware updates, configuration storage

Electrical Characteristics

Absolute Maximum Ratings

Supply Voltage (V_CC): -0.3V to +4.0V
Input Voltage (V_IN): -0.3V to V_CC + 0.3V
Operating Temperature Range: -40°C to +85°C (industrial)
Storage Temperature Range: -65°C to +150°C

DC Characteristics

Supply Current (Read): 20 mA (typical) at 5 MHz
Supply Current (Program/Erase): 30 mA (typical)
Standby Current: 1 µA (typical)
Input Leakage Current: ±1 µA (max)
Output Leakage Current: ±1 µA (max)

AC Characteristics

Read Cycle Time: 70 ns (fastest variant)
Address Access Time: 70 ns
Chip Enable Access Time: 70 ns
Output Enable Access Time: 30 ns
Byte/Word Program Time: 20 µs (typical)
Sector Erase Time: 1 second (typical)
Chip Erase Time: 32 seconds (typical)

Package Information

The M29W160B is available in multiple industry-standard packages, ensuring compatibility with various PCB designs and assembly processes.

Available Packages

TSOP48 (12x20mm): Thin Small Outline Package, 48 pins
SO44 (10.16x18.41mm): Small Outline Package, 44 pins
PLCC32 (11.35x13.97mm): Plastic Leaded Chip Carrier, 32 pins

Pin Configuration (TSOP48 Example)

A0-A19: Address inputs (20-bit addressing)
DQ0-DQ15: Data inputs/outputs (x8 or x16 mode)
CE#: Chip Enable (active low)
OE#: Output Enable (active low)
WE#: Write Enable (active low)
WP#: Write Protect (hardware protection)
RY/BY#: Ready/Busy output (open drain)
V_CC, V_SS: Power supply and ground

Functional Description

The M29W160B operates using standard flash memory protocols, supporting read, program, and erase operations through a command interface. Key functional aspects include:

Command Interface

The device uses a JEDEC-standard command set for all operations. Commands are written to specific addresses with specific data patterns to initiate operations like program, erase, or read.