# RM1201ASO8G

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

RM1201ASO8G 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 (remappable); high-drive port, source current configurable 3/6/18/24 mA at VDD = 5 V. |
| 2 | PA5/[TK2] | bidirectional | PORTA I/O with programmable pull-up/pull-down and level-change interrupt, also touch key channel 2 input (TK2 mapped here); high-drive port, source current configurable 3/6/18/24 mA at VDD = 5 V. |
| 3 | VDD | power_in | Power supply, 1.8 V to 5.5 V (2.5 V to 5.5 V above 2 MHz system clock up to 4 MHz); absolute maximum 5.5 V. |
| 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 | 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. |
| 7 | 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). |
| 8 | PA3/RSTN/VPP/[PWM1] | bidirectional | PORTA I/O (true open-drain when output) also active-low hardware reset input with configurable internal pull-up (RSTN), programming voltage (VPP) and open-drain PWM1 output needing an external pull-up. |

## 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 |
|---|---|---|---|---|---|---|---|
| Operating voltage (system frequency <= 2MHz) | VDD | 1.8 |  | 5.5 | V | 系统频率 <= 2MHz | 12 |
| Operating voltage (system frequency <= 4MHz) | VDD | 2.5 |  | 5.5 | V | 系统频率 <= 4MHz | 12 |
| IO input high | VIH | 0.7 |  |  | V | VDD = 1.8 to 5.5V (min 0.7VDD, max VDD) | 12 |
| IO input low | VIL |  |  | 0.3 | V | VDD= 1.8 to 5.5V (max 0.3VDD) | 12 |
| IO high leakage current | ILIH |  |  | 1 | uA | 所有输入口 VIO = VDD | 12 |
| IO low leakage current | ILIL |  |  | 1 | uA | 所有输入口 VIO = 0V | 12 |
| Internal 8MHz clock accuracy | FHIRC | -1 |  | 1 | % | TA = 25 ℃, VDD = 5V | 13 |
| Internal 8MHz clock accuracy over temperature | FHIRC | -3 |  | 3 | % | TA =-40~85℃, VDD=2.5V~5.5V | 13 |
| Internal 32kHz clock accuracy | FLIRC | -10 |  | 10 | % | TA = 25 ℃, VDD =2.5V~5.5V | 13 |
| Internal 32kHz clock accuracy over temperature | FLIRC | -40 |  | 40 | % | TA =-40~85℃, VDD=2.5V~5.5V | 13 |
| Operating temperature | TON | -40 |  | 85 | ℃ |  | 11 |
| Storage temperature | TOFF | -40 |  | 125 | ℃ |  | 11 |
| Supply voltage | VDD | -0.3 |  | 5.5 | V |  | 11 |
| I/O input voltage | VI | -0.3 |  |  | V | 所有 I/O 口 (max VDD + 0.3) | 11 |
| I/O output voltage | VO | -0.3 |  |  | V | 所有输出口 (max VDD + 0.3) | 11 |
| I/O output current (single) | IOH |  |  | 25 | mA | 单个 I/O 口工作时 | 11 |
| I/O output current (all) | IOH |  |  | 100 | mA | 所有 I/O 口工作时 | 11 |
| I/O input current (single) | IOL |  |  | 25 | mA | 单个 I/O 口工作时 | 11 |
| I/O input current (all) | IOL |  |  | 100 | mA | 所有 I/O 口工作时 | 11 |
| IO source current PA0~PA2 | IOH1 |  | 18 |  | mA | VDD = 5V,VIO=0.9VDD | 12 |
| IO sink current PA0~PA5 | IOL |  | 40 |  | mA | VDD =5V,VIO=0.1VDD | 12 |
| Pull-up resistance PA0~PA2,PA4,PA5 | RPU |  | 22 |  | kΩ | VDD =5V,VIO = 0V | 12 |
| Pull-up resistance PA3 | RPU1 |  | 50 |  | kΩ | VDD =5V,VIO = 0V | 12 |
| Pull-down resistance | RPD |  | 5 |  | kΩ | 所有 IO VDD =5V,VIO = 0V | 12 |
| Operating current | IDD1 |  | 1.3 |  | mA | CPUCLK=4MHz VDD=5V | 12 |
| Sleep current | IDD3 |  | 0.8 |  | uA | VDD = 3.3V (禁止 BOR) | 12 |

## CAD (KiCad official)

- Symbol: `RM1201ASO8G`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `rm1201aso8g-etched.step` / `rm1201aso8g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rm1201aso8g.step` / `rm1201aso8g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Realmagic datasheet](docs/rm1201aso8g-datasheet.pdf) (20 pp, sha256 `2c80a7287dadbb0e`, retrieved 2026-10-26, 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/rm1201aso8g-datasheet.pdf)