PMC-C-CMX Datasheet
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Mechanical information and diagrams
Product Images
Front Side
Back Side
General Specification
| Dimension | 190.5 x 72.0 | mm |
| Underside/top min. clearance | -5.8, +22.0 | mm |
Compute Module
| HDMI(R) | 2 x | 4k60p 1.4b |
| MIPI CSI/DSI | 2 x 2 | 3/5 Lane |
| Native USB | 4 or 3 or 1* | 480Mbps 2.0 |
| PCIe support | 8GT/s PCIe 3.0 | |
| PCIe NGFF card form factors | M- 30 x 30/42/80 | mm |
General IO
| Cellular Capability | Yes, with Nano-SIM and B-key Card |
| Ethernet | 1000-T |
| Conforms to RPi HAT spec | Yes |
| Conforms to RPi 40P header | Yes |
| Max. Pin-Pin Crosstalk | 0.25V [PASS]* |
RS-485 USART transceiver
| RS-485 | 20 | Mbps |
| Transciever IO | 12/13 | TX/RX |
| PROFIBUS-DP capable | Yes****** |
ESD protection
| HDMI(R) | Yes, IEC 61000-4-2 Level 4 |
| USB |
CM Real Time Clock
| RTC Chip | PCF85063AT |
| Crystal Tolerance/Drift | -6.666666667 |
| Wake-on-alarm and interrupt | Yes |
Real Time Controller STM32H7B0
General Information
| Flash Size | 128k/1.4M | flash/RAM |
| Flash Size | 128k/1.4M | flash/RAM |
| Core Clock | 280 | MHz, max |
| Ext. Clocks | 16 + 32.768 | MHz, KHz |
| OTA flash | Yes*** |
GPIO
| User GPIOs | 4x16 + 1x8 [58 total] |
| ESD tolerance | IEC 61000-4-2 +-25kv |
| Max. Pin-Pin Crosstalk | 0.35V [PASS]* |
| Dedicated SWD/ST-LINK(R) interface | Yes (connected to PA13/14) |
Power Inputs
Wire/Line-Pressing terminal input
| Voltage range | 7-55/10 | VDC |
| Current Max. | 10 | ADC |
| Reverse Polarity protect | Yes |
USBC-PD R2.0 input
| Valid VBUS Voltages | 44089 | V |
| Valid PD Powers | 21+/27+/45+ | W |
| User-programmable PDOs | Yes******* |
Power draw
| Quiescent draw without compute module | 560 +-20 | mW |
| Quiescent draw with compute module | 2200 +-50 | mW |
| Short-circuit tolerance | Yes**** |
Onboard Power Converters
| 5V bus total current | 5 | ADC |
| Input-5V efficiency | 85-92 | %@ 2.5A, 48VIN |
| 5V maximum ripple | 30 | mV (CCM only) |
| 3V3 bus total current | 5 | ADC |
| Input-3V3 efficiency | 82-90 | %@ 2.5A, 48VIN |
| 5V maximum ripple | 20 | mV (CCM only) |
| 5V GPIO current limit | Unregulated | |
| 3V3 GPIO current limit | 1.5 | ADC |
LSI Configuration and Pin Table
| CM 4/5 | Definition | CM GPIO | STM32H7 GPIO |
| ↔ | UART TX+ | 14 | PA3 |
| STM32H7 | RX+ | 15 | PA2 |
| ↔ | SPI MISO+ | 9 | PC1 |
| CM 4/5 | MOSI+ | 10 | PC2 |
| 5 | CLK | 11 | PB10 |
| 6 | CS | Undefined | Undefined |
| 7 | SPI MISO | ||
| [24, 25, 26, 27] | MOSI | ||
| 11 | CLK | ||
| Undefined | CS [0-3] | ||
| Undefined | I²2C SDA | ||
| SCL |
The PMC-C-CMX controller is designed and tested to ensure reliable function on the fastest interchip and system data rates.
| UART/SPI max speed | 24 | Mbps |
| I2C max speed | 2 | Mbps |
| UART/SPI maximum rise-time | 9.3 | ns |
| I²2C maximum rise-time | 132 | ns |
Disclaimers
*4 USB A ports or 3 USB A ports with populated PCIe B card, or 1 USB-C 2.0 port as master or slave (for EEPROM flash)
** BCM2711 has internal 2.5kV HBM GPIO ESD tolerance *** OTA capable through UART with supplied program running on compute module, or SWD through additional SKU **** Suitable for live/hot development as 3V3 GPIO to GND does not cause compute module or STM32H7 reboot.
***** PASS status is given to the crosstalk spec if the maximum measured induced crosstalk does not exceed 1/2 logic low
** Full electronic compliance with PROFIBUS-DP, standardized common connectors available with additional SKUs
*** Programming and MCU interface exposed through onboard 8-pin header