Product Overview
Harris ICM7170IPG Microprocessor-Compatible Real-Time Clock in a 24-Pin Plastic DIP
Condition
Used component pull, handled with care, clean, and guaranteed to your satisfaction. In the photographs the 24-pin plastic DIP is marked ICM7170IPG under the Harris logo, with a second line reading H9631, and it sits on pink antistatic foam. The body is clean with crisp white legend, the leads are full length, straight and bright, and the pin 1 notch at the end of the package is clearly visible in the angled shot. Electrical function is not tested here.
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Product Overview
The ICM7170IPG is a microprocessor-compatible real-time clock from Harris Semiconductor, supplied here as a single through-hole part in a 24-pin plastic dual inline package. It is the kind of chip that sat on a board next to the processor and kept the date and time while the CPU got on with its real job, which is why it turns up in older single-board computers, instrument front panels, and industrial controllers. The marking on this piece is fully legible: the Harris logo, ICM7170IPG on the top line, H9631 on the second. The ICM7170 family later carried the Intersil name after Harris spun off its semiconductor business, so datasheets circulate under both brands. Electrical characteristics, supply range, crystal requirements, and bus timing are not confirmed here. Check the ICM7170 datasheet against your design before you commit the part to a board.
Key Features
- Part number: ICM7170IPG, marked on the package top
- Brand: Harris, logo visible on the package
- Function: microprocessor-compatible real-time clock
- Package: 24-pin plastic DIP, through-hole leads, counted in the photos
- Second-line marking: H9631
- Lead condition: full length, straight, bright, not clipped or bent
- Quantity available: one piece
- Condition: used component pull, clean, untested
- Electrical ratings and timing: Not confirmed - verify against the ICM7170 datasheet before use
Applications
- Retro computing restorer swapping a dead clock chip out of a socketed 1990s single-board computer
- Industrial maintenance technician keeping a legacy controller's date and time functions alive without redesigning the board
- Embedded developer breadboarding a parallel-bus real-time clock to bring up firmware written for the original part
- Collector or repair shop stocking a hard-to-source timekeeping IC in the DIP drawer before it disappears entirely
Frequently Asked Questions
What exactly is printed on the chip?
Two lines plus the maker's mark. The Harris logo sits at the left, ICM7170IPG runs across the top line, and H9631 sits below it. All of it is legible in the straight-on photo, which is why we shot it that way.
Has this clock chip been tested or powered up?
No. It is sold as a used component pull with no electrical testing performed. What we can vouch for is what the camera shows: clean package, legible markings, straight full-length leads.
What is included with the part?
The single integrated circuit only. No crystal, no backup battery, no socket, no documentation, and no original packaging. If your design needs the timebase crystal or a backup cell, source those separately.
Will it drop into a standard 24-pin DIP socket?
The leads are full length and straight in the photos with no clipping or splay, so it should seat in a standard 0.6 inch wide 24-pin DIP socket. Confirm the pinout against the ICM7170 datasheet before you plug it into anything powered.
It is used and untested, so what am I really buying here?
You are buying one specific, photographed chip and taking on the risk that a pulled part carries. The photos are the spec: the markings you can read, the leads you can see, the package condition as it sits. We have not powered it, so treat it as a candidate for your bench rather than a guaranteed-working replacement, and plan on socketing it and verifying before it goes into anything you depend on. If it does not work out, our satisfaction guarantee still stands. Shipping is $8 flat rate and free once your order passes $28, so this one rides along free with a few other parts, and orders leave our Idaho warehouse the same or next business day.
Harris built the ICM7170 to hold the date steady while the processor chased everything else, and this one already served a tour inside somebody's hardware. Whether it counts out another decade is the part of the story you get to write.
