# RM1201ASO8D

**Realmagic** · Microcontroller Units (MCUs/MPUs/SOCs) · SOP-8

RM1201ASO8D from Realmagic, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | PA4/TK3/[PWM0] | bidirectional | PORTA I/O with programmable pull-up/pull-down and level-change interrupt, also touch key channel 3 input (TK3) and PWM0 output (alternate mapping); PA4 is a high-drive port that can drive an LED directly. |
| 2 | PA5/[TK2] | bidirectional | PORTA I/O with programmable pull-up/pull-down and level-change interrupt, also touch key channel 2 input (alternate TK2 mapping); PA5 is a high-drive port that can drive an LED directly. |
| 3 | VDD | power_in | Power supply, 1.8 V to 5.5 V (1.8 V min at system clock <= 2 MHz, 2.5 V min at <= 4 MHz). |
| 4 | VSS | power_in | Ground. |
| 5 | PA0/PCL/TK0 | bidirectional | PORTA I/O with programmable pull-up/pull-down and level-change interrupt, also serial programming/debug clock input (PCL) and touch key channel 0 input (TK0). |
| 6 | PA3/RSTN/VPP/[PWM1] | bidirectional | PORTA I/O (true open-drain when set as output), also active-low hardware reset input (RSTN, configurable internal pull-up), programming voltage (VPP) and open-drain PWM1 output needing an external pull-up resistor. |
| 7 | PA1/PDA/TK1/PWM0 | bidirectional | PORTA I/O with programmable pull-up/pull-down and level-change interrupt, also serial programming/debug data I/O (PDA), touch key channel 1 input (TK1) and PWM0 output. |
| 8 | PA2/TK2/PWM1/T0 | bidirectional | PORTA I/O with programmable pull-up/pull-down and level-change interrupt, also touch key channel 2 input (TK2), PWM1 output and Timer0 external input clock (T0). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Realmagic |
| Package | SOP-8 |
| Category | Embedded Processors & Controllers |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 工作温度 (Operating temperature) | TON | -40 |  | 85 | ℃ |  | 11 |
| 储藏温度 (Storage temperature) | TOFF | -40 |  | 125 | ℃ |  | 11 |
| 工作电压 (Supply voltage) | VDD | -0.3 |  | 5.5 | V |  | 11 |
| I/O 口输出电流 (single I/O) | IOH |  |  | 25 | mA | 单个 I/O 口工作时 | 11 |
| I/O 口输出电流 (all I/O) | IOH |  |  | 100 | mA | 所有 I/O 口工作时 | 11 |
| I/O 口输入电流 (single I/O) | IOL |  |  | 25 | mA | 单个 I/O 口工作时 | 11 |
| I/O 口输入电流 (all I/O) | IOL |  |  | 100 | mA | 所有 I/O 口工作时 | 11 |
| 工作电压 (system freq <= 2MHz) | VDD | 1.8 |  | 5.5 | V | 系统频率 <= 2MHz | 12 |
| 工作电压 (system freq <= 4MHz) | VDD | 2.5 |  | 5.5 | V | 系统频率 <= 4MHz | 12 |
| IO 输入高 | VIH | 0.7 |  |  | V | VDD = 1.8 to 5.5V; min printed as 0.7VDD, max VDD | 12 |
| IO 输入低 | VIL |  |  | 0.3 | V | VDD= 1.8 to 5.5V; max printed as 0.3VDD | 12 |
| IO 高漏电流 | ILIH |  |  | 1 | uA | 所有输入口 VIO = VDD | 12 |
| IO 低漏电流 | ILIL |  |  | 1 | uA | 所有输入口 VIO = 0V | 12 |
| 校准后内部时钟频率 (HIRC, 25℃) | FHIRC | -1 |  | 1 | % | TA = 25 ℃, VDD = 5V | 13 |
| 校准后内部时钟频率 (HIRC, full temp) | FHIRC | -3 |  | 3 | % | TA =-40~85℃, VDD=2.5V~5.5V | 13 |
| 校准后内部时钟频率 (LIRC, 25℃) | FLIRC | -10 |  | 10 | % | TA = 25 ℃, VDD =2.5V~5.5V | 13 |
| 校准后内部时钟频率 (LIRC, full temp) | FLIRC | -40 |  | 40 | % | TA =-40~85℃, VDD=2.5V~5.5V | 13 |
| 中心频率 HIRC | FHIRC |  | 8 |  | MHz |  | 13 |
| 中心频率 LIRC | FLIRC |  | 32 |  | KHz |  | 13 |

## CAD (KiCad official)

- Symbol: `RM1201ASO8D`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `rm1201aso8d-etched.step` / `rm1201aso8d-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rm1201aso8d.step` / `rm1201aso8d.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Realmagic datasheet](docs/rm1201aso8d-datasheet.pdf) (20 pp, sha256 `2c80a7287dadbb0e`, retrieved 2026-10-24, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/rm1201aso8d-datasheet.pdf)