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Intel MD8749H — Microcontrollers & Processors (MCU / MPU / DSP)
Intel

Intel MD8749H MCS-48 8-Bit RISC MCU, 11 MHz

MPNMD8749H
End of Life

Intel MD8749H, MCS-48 8-Bit RISC MCU, 11 MHz, 27 I/O, ROM, 4.5 V supply, 0 to 70 °C, through-hole bulk.

$155.32Ref. price · indicative, final on quote
MD8749H datasheet
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Specifications

MD8749H Technical Specifications
ParameterValue
Oscillator typeExternal
Program memory typeROM
Mounting_typeThrough Hole
Operating temperature high0°C to 70°C(TA)
Cpu_coreMCS-48
Frame_size8-Bit
Fuse_speed11 MHz
Package_typeBulk
Number of i (O)27
Supply_voltage_v4.5

Product details

MCS-48 8-bit RISC MCU — legacy control core

The Intel MD8749H is an 8-bit RISC microcontroller from the MCS-48 family, running at 11 MHz with 27 I/O lines and ROM program memory. It operates from a 4.5 V supply over the commercial temperature range of 0 to 70 °C, in a through-hole package. This part was designed for embedded control in appliances, office equipment, and industrial peripherals where a simple, fixed-program controller sufficed.

11 MHz clock, ROM storage — what it means for the BOM

The 11 MHz clock rate is the maximum external oscillator frequency. Program memory is mask ROM, so firmware is fixed at the factory.

Frequently asked questions

What is the closest functional second-source for the MD8749H?

The MG8097BH is a peer in the MCS-48 family running at 12 MHz, but its programmability is unverified and it may not be a drop-in replacement. Verify pinout and memory type before substituting.