component
RM1211ATS20A
Public Made by Adomby adom
Realmagic Microcontroller Units (MCUs/MPUs/SOCs), TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownRM1211ATS20A
Realmagic · Microcontroller Units (MCUs/MPUs/SOCs) · TSSOP-20
RM1211ATS20A from Realmagic, in a TSSOP-20. 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 | VSS | power_in | Ground. |
| 2 | PB0 | bidirectional | Bidirectional GPIO shared with ADC15, TK15 touch channel 15, XIN crystal input, A1O op-amp/comparator 1 output, T1PWM2N and T2PWM0 outputs. |
| 3 | PB1 | bidirectional | Bidirectional GPIO shared with ADC14, TK14, XOUT crystal output, VREF internal reference output, RCOUT main clock output, T1PWM1 and UART TX. |
| 4 | PB2 | bidirectional | Bidirectional GPIO shared with ADC13, TK13, RSTN external reset input, A2N op-amp/comparator 2 negative input, T1PWM2 and T2PWM1 outputs. |
| 5 | PB3 | bidirectional | Bidirectional GPIO shared with ADC12, TK12, A3P op-amp/comparator 3 positive input, INT1 external interrupt 1 input, T1PWM1 and T1PWM0N outputs. |
| 6 | PB4 | bidirectional | Bidirectional GPIO shared with ADC11, TK11, A3N op-amp/comparator 3 negative input, UART RX, T1 Timer1 count input and T1PWM0 output. |
| 7 | PB5 | bidirectional | Bidirectional GPIO shared with ADC10, TK10, A3O op-amp/comparator 3 output, INT1 input, T1PWM0N, T1PWM1 and T1PWM2 outputs. |
| 8 | PB6 | bidirectional | Bidirectional GPIO shared with ADC9, TK9, A2O op-amp/comparator 2 output, T1PWM1N and T2PWM1 outputs. |
| 9 | PB7 | bidirectional | Bidirectional GPIO shared with ADC8, TK8, A2N op-amp/comparator 2 negative input, T0 Timer0 count input, T1PWM2N output and INT0 external interrupt 0 input. |
| 10 | PC0 | bidirectional | Bidirectional GPIO shared with ADC16, TK16, A2P op-amp/comparator 2 positive input, VREF output, UART TX, T2PWM0 and T1PWM2 outputs. |
| 11 | PC1 | bidirectional | Bidirectional GPIO shared with ADC17, TK17, A1P op-amp/comparator 1 positive input, RCOUT clock output, UART RX and T1PWM3 output. |
| 12 | PA7 | bidirectional | Bidirectional GPIO shared with ADC7, TK7, A1N op-amp/comparator 1 negative input and T1PWM3N output. |
| 13 | PA6 | bidirectional | Bidirectional GPIO shared with ADC6, TK6, A1O op-amp/comparator 1 output, T1PWM3 and T1PWM0 outputs. |
| 14 | PA5 | bidirectional | Bidirectional GPIO shared with ADC5, TK5, A0O op-amp/comparator 0 output and T1PWM1N output. |
| 15 | PA4 | bidirectional | Bidirectional GPIO shared with ADC4, TK4, A0N op-amp/comparator 0 negative input, VREF output, UART RX and T1PWM0N output. |
| 16 | PA3 | bidirectional | Bidirectional GPIO shared with PDA serial programming/debug data I/O, ADC3, TK3, A0P op-amp/comparator 0 positive input, UART TX, T2PWM1 and T1PWM0 outputs. |
| 17 | PA2 | bidirectional | Bidirectional GPIO shared with PCL serial programming/debug clock I/O, ADC2, TK2, A2P op-amp/comparator 2 positive input, T2PWM0 and T1PWM1N outputs. |
| 18 | PA1 | bidirectional | Bidirectional GPIO shared with ADC1, TK1, VREF output, A1P op-amp/comparator 1 positive input, INT0 input, UART TX and T1PWM3 output. |
| 19 | PA0 | bidirectional | Bidirectional GPIO shared with ADC0, TK0, A1N op-amp/comparator 1 negative input, INT1 input, UART RX and T1PWM3N output. |
| 20 | VDD | power_in | Power supply; datasheet operating range VDD = 1.8 to 5.5 V (absolute maximum -0.3 to +5.5 V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Realmagic |
| Package | TSSOP-20 |
| Category | Embedded Processors & Controllers |
| Pins | 20 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage | VDD | -0.3 | 5.5 | V | 123 | ||
| I/O output current (single I/O) | IOH | 25 | mA | Single I/O operating | 123 | ||
| I/O output current (all I/O) | IOH | 80 | mA | All I/O operating | 123 | ||
| I/O input current (single I/O) | IOL | 20 | mA | Single I/O operating | 123 | ||
| I/O input current (all I/O) | IOL | 80 | mA | All I/O operating | 123 | ||
| Operating temperature | TA | -40 | 85 | °C | 123 | ||
| Storage temperature | TSTG | -40 | 125 | °C | 123 | ||
| Operating voltage | VDD | 1.8 | 5.5 | V | Oscillator frequency = 0.4-2MHz/2CLK | 123 | |
| Operating voltage | VDD | 3 | 5.5 | V | Oscillator frequency = 0.4-8MHz/2CLK | 123 | |
| Operating voltage | VDD | 4 | 5.5 | V | Oscillator frequency = 0.4-16MHz/2CLK | 123 | |
| Input high voltage | VIH1 | 0.7 | V | 3Eh,bit5=0, VDD = 1.8 to 5.5V; min printed 0.7VDD | 123 | ||
| Input high voltage | VIH2 | 0.4 | V | 3Eh,bit5=1, VDD = 1.8 to 5.5V; min printed 0.4VDD | 123 | ||
| Input low voltage | VIL1 | 0.3 | V | 3Eh,bit5=0, VDD = 1.8 to 5.5V; max printed 0.3VDD | 123 | ||
| Input low voltage | VIL2 | 0.2 | V | 3Eh,bit5=1, VDD = 1.8 to 5.5V; max printed 0.2VDD | 123 | ||
| Output high voltage | VOH | 0.9 | V | IOH = -10mA P0, P1, VDD = 3.0 to 5.5V; min printed 0.9VDD | 123 | ||
| Output low voltage | VOL | 0.1 | V | IOL = 20mA P0, P1, VDD = 3.0 to 5.5V; max printed 0.1VDD | 123 | ||
| Input high leakage current | ILIH1 | 1 | uA | All input ports, VIN = VDD | 124 | ||
| Input low leakage current | ILIL1 | -1 | uA | All input ports, VIN = 0V | 124 | ||
| Output high leakage current | ILOH | 2 | uA | All output pins, VOUT = VDD | 124 | ||
| Output low leakage current | ILOL | -2 | uA | All output pins, VOUT = 0V | 124 | ||
| Pull-up resistance | RP1 | 25 | 50 | 100 | kΩ | VIN = 0V, VDD = 5V, TA = 25℃ | 124 |
| Pull-down resistance | RP2 | 25 | 50 | 100 | kΩ | VIN = 0V, VDD = 5V, TA = 25℃ | 124 |
| Supply current, Run mode | IDD1 | 3.2 | 6 | mA | IRC 16MHz, 2CLK, VDD=5V, TA=25℃ | 124 | |
| Supply current, Run mode | IDD1 | 1.1 | 2 | mA | Crystal 4MHz, 2CLK, VDD=5V, TA=25℃ | 124 | |
| Supply current, Sleep mode | IDD3 | 0.5 | uA | VDD = 3.3V (LVR disabled), TA = 25℃ | 124 | ||
| Supply current, Sleep mode | IDD3 | 1 | uA | VDD = 3.3V (LVR enabled), TA = 25℃ | 124 | ||
| Supply current, Sleep mode | IDD3 | 1.2 | uA | VDD = 5V (LVR disabled), TA = 25℃ | 124 | ||
| Supply current, Sleep mode | IDD3 | 1.8 | uA | VDD = 5V (LVR enabled), TA = 25℃ | 124 | ||
| HIRC calibrated frequency accuracy | FHIRC | -1 | 1 | % | TA = 25 ℃, VDD = 5V | 124 | |
| HIRC calibrated frequency accuracy | FHIRC | -3 | 3 | % | TA =-40 |
124 | |
| HIRC center frequency | FHIRC | 16 | MHz | 124 | |||
| LIRC calibrated frequency accuracy | FLIRC | -10 | 10 | % | TA = 25 ℃, VDD =2.5V~5.5V | 125 | |
| LIRC calibrated frequency accuracy | FLIRC | -40 | 40 | % | TA =-40 |
125 | |
| LIRC center frequency | FLIRC | 128 | KHz | 125 | |||
| OPA supply voltage | VDD | 3 | 5.5 | V | 126 | ||
| OPA open-loop gain | AOL | 60 | 90 | dB | 127 | ||
| OPA power supply rejection ratio | PSRR | 60 | 80 | dB | 127 | ||
| OPA common-mode rejection ratio | CMRR | 60 | 90 | dB | 127 | ||
| Supply current, IDLE mode | IDD2 | 400 | uA | IRC 16MHz, 2CLK, VDD=5V, TA=25℃ | 124 |
CAD (KiCad official)
- Symbol:
RM1211ATS20A - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
rm1211ats20a-etched.step/rm1211ats20a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rm1211ats20a.step/rm1211ats20a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Realmagic datasheet (130 pp, sha256
80f14a0a206b3aa3, 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, primaryclaude-sonnet-5-5(text), consensusclaude-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).