S3C44B0X's ADC is a 10-bit successive approximation ADC with 8 analog signal inputs, a maximum conversion rate of 100KSPS, an input voltage range of 0-2.5V, and an input bandwidth of 0-100Hz. It does not have a sample and hold circuit.
This Chinese datasheet describes the S3C44B0X microcontroller's analog‑to‑digital converter (ADC). The ADC provides eight analog inputs, 10‑bit resolution, and operates without a sample‑hold circuit, making it suitable for low‑frequency signals such as resistive touch‑screen outputs.
Key sections cover ADC conversion time calculations, resolution computation, the lack of a sample‑hold circuit, and detailed descriptions of the ADC control registers (ADCCON, ADCPSR, ADCDAT). The document also lists electrical characteristics such as input voltage range, bandwidth, linearity errors and power consumption. This manual is written in Chinese.
| Number of analog inputs | 8 |
|---|---|
| ADC resolution | 10 bit |
| Maximum conversion rate | 100 KSPS |
| Input voltage range | 0 – 2.5 V |
| Input bandwidth | 0 – 100 Hz (no sample‑hold) |
| Differential linearity error | ±1 LSB |
| Integral linearity error | ±2 LSB (max ±3 LSB) |
| Sample‑hold circuit | Not provided |
The ADC can convert up to 100 KSPS.
No, the ADC does not have a sample‑hold circuit.
The ADC accepts input voltages from 0 to approximately 2.5 V.
It provides eight analog input channels.