Microchip Technology AT27C256R-90RC Memory Integrated Circuit
IC EPROM 256KBIT PARALLEL 28SOIC
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
AT27C256R-90RC
Detailed Description
IC EPROM 256KBIT PARALLEL 28SOIC
Package
28-SOIC (0.342", 8.69mm Width)
Key Features
Package / Case: 28-SOIC (0.342", 8.69mm Width); Mounting Type: Surface Mount
Lifecycle Status
Obsolete
RoHS State
RoHS Compliant
Datasheet
AT27C256R-90RC Datasheet
Quick Jump:
Technical Specifications
Microchip Technology AT27C256R-90RC Memory Integrated Circuit technical specifications.
General
Memory Size
256Kb (32K x 8)
Package / Case
28-SOIC
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 70°C (TC)
Supply Voltage
4.5V ~ 5.5V
Technology
EPROM - OTP
Memory Type
Non-Volatile
Access Time
90 ns
Memory Format
EPROM
Memory Interface
Parallel
Alternate Parts Comparison (AT27C256R-90RC vs AT27BV512-70RU vs AT27LV512A-15RC vs AT27LV512A-70RI)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 28-SOIC | 28-SOIC | 28-SOIC | 28-SOIC |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | 0°C ~ 70°C (TC) | -40°C ~ 85°C (TC) | 0°C ~ 70°C (TC) | -40°C ~ 85°C (TC) |
| Supply Voltage | 4.5V ~ 5.5V | 2.7V ~ 3.6V, 4.5V ~ 5.5V | 3V ~ 3.6V, 4.5V ~ 5.5V | 3V ~ 3.6V, 4.5V ~ 5.5V |
| Memory Size | 256Kb (32K x 8) | 512Kb (64K x 8) | 512Kb (64K x 8) | 512Kb (64K x 8) |
| Access Time | 90 ns | 70 ns | 150 ns | 70 ns |
| Memory Format | EPROM | EPROM | EPROM | EPROM |
| Memory Interface | Parallel | Parallel | Parallel | Parallel |
| Memory Type | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile |
| Technology | EPROM - OTP | EPROM - OTP | EPROM - OTP | EPROM - OTP |
| Lifecycle Status | -- | Obsolete | Obsolete | Obsolete(EOL) |
| Action |
More Parts in EPROM
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.