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Maxim DS89C430/DS89C450 Datasheet
The DS89C430 and DS89C450 are 8051‑compatible microcontrollers offering up to 33 MHz operation and 33 MIPS performance. They provide 16 kB or 64 kB of on‑chip flash, three 16‑bit timers, dual full‑duplex serial ports and a range of power‑management features.
The document includes ordering information, absolute maximum ratings, DC and AC electrical characteristics, pin configurations, package outlines and revision history for both devices.
Maxim DS89C450 specifications
| Maximum Clock Frequency | 33 MHz |
|---|---|
| Supply Voltage | 4.5 V – 5.5 V |
| Active Mode Supply Current | Typical 110 mA |
| Idle Mode Supply Current (33 MHz) | Typical 50 mA |
| Flash Memory Size | 16 kB (DS89C430) / 64 kB (DS89C450) |
All Maxim DS89C450 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the operating temperature range?
The device operates from –40 °C to +85 °C ambient temperature.
How much flash memory does each device contain?
The DS89C430 includes 16 kB of flash, while the DS89C450 includes 64 kB of flash.