Key facts
- Brand
- Samsung
- Model
- S3C7238
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-01
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Samsung S3C7238/S3C7235/P7238/P7235 Microcontroller Handbook
The S3C7238, S3C7235, P7238 and P7235 are single‑chip CMOS microcontrollers built around Samsung's newest 4‑bit CPU core, SAM47. They offer LCD direct‑drive capability, 8‑bit timers, serial I/O and up to 40 I/O pins in an 80‑pin QFP package, making them suitable for applications requiring integrated LCD functions.
Key features include 512 × 4‑bit RAM, 8 KB or 16 KB ROM depending on the model, multiple power‑down modes, a variety of oscillation sources, and extensive interrupt options. The devices operate from 1.8 V to 5.5 V and across –40 °C to 85 °C, with a typical main system clock of 4.19 MHz and a 32.768 kHz subsystem clock.
Samsung S3C7238 specifications
| CPU core | 4‑bit SAM47 |
|---|---|
| RAM | 512 × 4‑bit |
| ROM (S3C7238/P7238) | 8 KB × 8‑bit |
| ROM (S3C7235/P7235) | 16 KB × 8‑bit |
| LCD direct‑drive capability | Maximum 16‑digit |
| I/O pins (dedicated) | Up to 40 pins |
| Package type | 80‑pin QFP |
| Operating voltage range | 1.8 V to 5.5 V |
| Operating temperature range | -40 °C to 85 °C |
| Main system clock (typical) | 4.19 MHz |
| Subsystem clock | 32.768 kHz |
Source: Samsung S3C7238/S3C7235/P7238/P7235 Microcontroller Handbook
All Samsung S3C7238 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What CPU core is used in the S3C7238/C7235 microcontrollers?
They use Samsung's newest 4‑bit CPU core called SAM47.
From: Samsung S3C7238/S3C7235/P7238/P7235 Microcontroller Handbook
How many I/O pins can be dedicated in the 80‑pin QFP package?
Up to 40 of the 80 pins can be dedicated to I/O functions.
From: Samsung S3C7238/S3C7235/P7238/P7235 Microcontroller Handbook
How many pins can be used for I/O in the 80‑pin QFP package?
Up to 40 pins of the 80‑pin QFP package can be dedicated to I/O.
What is the typical main system clock frequency?
The typical main system clock frequency is 4.19 MHz.