Microchip Technology AT87C51RD2-RLTUM Microcontroller, Microprocessor, FPGA Modules
IC MCU 8BIT 64KB OTP 44VQFP
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
AT87C51RD2-RLTUM
Detailed Description
IC MCU 8BIT 64KB OTP 44VQFP
Package
44-LQFP
Key Features
Package / Case: 44-LQFP; Mounting Type: Surface Mount
Lifecycle Status
Obsolete
RoHS State
RoHS Compliant
Datasheet
AT87C51RD2-RLTUM Datasheet
Quick Jump:
Technical Specifications
Microchip Technology AT87C51RD2-RLTUM Microcontroller, Microprocessor, FPGA Modules technical specifications.
General
Series
87C
RAM Size
1K x 8
RoHS
Yes
Package / Case
44-LQFP
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
4.5V ~ 5.5V
Lifecycle Status
Obsolete
Peripherals
POR, PWM, WDT
Number of I/O
32
Alternate Parts Comparison (AT87C51RD2-RLTUM vs AT80C51RD2T-RLTUM vs AT89C51CC01UAT-RLRUM vs AT89C51CC01CAT-RLTUM)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 44-LQFP | 44-LQFP | 44-LQFP | 44-LQFP |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | 4.5V ~ 5.5V | 2.7V ~ 5.5V | 3V ~ 5.5V | 3V ~ 5.5V |
| Core Processor | 80C51 | 80C51 | 80C51 | 80C51 |
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit |
| RAM Size | 1K x 8 | 1K x 8 | 1.25K x 8 | 1.25K x 8 |
| RoHS | Yes | Yes | Yes | Yes |
| Lifecycle Status | Obsolete | Active | Active | Active |
| Connectivity | UART/USART | UART/USART | CANbus, UART/USART | CANbus, UART/USART |
| Number of I/O | 32 | 32 | 34 | 34 |
| Oscillator Type | Internal | Internal | External | External |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
Suggested replacements
MC9S08AC128CFGENXP SemiconductorsNXP
IC MCU 8BIT 128KB FLASH 44LQFP
MC9S08QE64CLDNXP SemiconductorsNXP
IC MCU 8BIT 64KB FLASH 44LQFP
More Parts in Microcontrollers
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.