MSP430FR2111IPW16R — 16MHz MSP430 FRAM MCU, TSSOP-16
Texas Instruments MSP430FR2111IPW16R, MSP430™ FRAM series, 16MHz 16-bit MCU, 3.75KB FRAM, 1KB SRAM, 8x10b A/D, I²C/SPI/UART, 1.8-3.6V, 12 GPIO, 16-TSSOP, -40°C to 85°C, EOL/HOT lifecycle.
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Specifications
| Parameter | Value |
|---|---|
| Series | MSP430™ FRAM |
| Mounting type | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FRAM |
| Voltage - supply (Vcc (Vdd)) | 1.8V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 16MHz |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| RAM size | 1K x 8 |
| Core size | 16-Bit |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | I²C, SCI, SPI, UART/USART |
| Number of i (O) | 12 |
| Core processor | MSP430 CPU16 |
| Case | 16-TSSOP (0.173\", 4.40mm Width) |
| Data converters | A/D 8x10b |
| Program memory size | 3.75KB (3.75K x 8) |
Frequently asked questions
Does the internal 16MHz oscillator meet IEEE 1588 timing accuracy requirements?
No. The internal RC oscillator is ±2% across -40°C to 85°C, which is roughly ±32000 ppm. IEEE 1588 auxiliary clock functions typically require ±50 ppm or tighter. An external crystal or TCXO is required for any precision timing application.
Can I run I²C, SPI, and all 8 ADC channels simultaneously on this MCU?
The 12 GPIO pins are shared between the 8 ADC channels and the communication peripherals. You cannot route all 8 ADC channels independently while I²C and SPI are simultaneously active on their dedicated pins — the shared pins are consumed by the communication function, and firmware must sequence acquisition between communication windows. The pin-mux table in the TI datasheet defines the exact constraints.
What is the realistic FRAM budget for a Modbus-RTU stack on this part?
3.75KB is very tight. A Modbus-RTU master stack with protocol state machine, CRC table, register map, and UART driver typically exceeds 4KB of compiled flash in MSP430 GCC — already over the available space on this device without hand-optimisation or a slave-only implementation. Plan for a stripped-down stack or move to a larger FR2xxx variant if Modbus master functionality is required alongside other peripherals.