The Microchip AT27C256R is a low-power, high-performance 256-Kbit One Time Programmable EPROM organized as 32-Kbit x 8. Requiring a single 5V power supply, in normal read mode operation typical power consumption is only 8 mA in active mode and less than 10 μA in standby mode. Any byte can be accessed in less than 45 ns, eliminating the need for speed reducing WAIT states on high-performance microprocessor systems.
Additional Features 256-Kbit (32-Kbit x 8) Low-power CMOS operation
Standard power supply range, 5V +/-10%
100 μA max standby
20mA max active at 5 MHz
Parallel Interface
45 ns access time
High-reliability CMOS technology
2,000V ESD protection
200 mA latchup immunity
Rapid programming algorithm – 100 μs/byte (typical)
CMOS and TTL compatible inputs and outputs
Integrated product identification code
Industrial Temperature Range: -40°C to 85°C
Available in Green (Pb/Halide-free) Packaging Only
32-lead, Plastic J-leaded Chip Carrier (PLCC) 28-lead, 0.600" wide, plastic, dual inline package (PDIP)
The Microchip AT27C256R is a low-power, high-performance 256-Kbit One Time Programmable EPROM organized as 32-Kbit x 8. Requiring a single 5V power supply, in normal read mode operation typical power consumption is only 8 mA in active mode and less than 10 μA in standby mode. Any byte can be accessed in less than 45 ns, eliminating the need for speed reducing WAIT states on high-performance microprocessor systems.
Additional Features
- 256-Kbit (32-Kbit x 8)
- Low-power CMOS operation
- Standard power supply range, 5V +/-10%
- 100 μA max standby
- 20mA max active at 5 MHz
- Parallel Interface
- High-reliability CMOS technology
- 2,000V ESD protection
- 200 mA latchup immunity
- Rapid programming algorithm – 100 μs/byte (typical)
- CMOS and TTL compatible inputs and outputs
- Integrated product identification code
- Industrial Temperature Range: -40°C to 85°C
- Available in Green (Pb/Halide-free) Packaging Only
- 32-lead, Plastic J-leaded Chip Carrier (PLCC)
28-lead, 0.600" wide, plastic, dual inline package (PDIP)
