MSP430AFE221
Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.
What the MSP430AFE221 does
The MSP430AFE2x3, MSP430AFE2x2, and MSP430AFE2x1 are ultra-low-power mixed-signal microcontrollers featuring a 16-bit RISC CPU, up to 12-MHz system clock, and three, two, or one independent 24-bit sigma-delta ADCs respectively. These devices operate on a single supply of 1.8 V to 3.6 V, consume 220 µA at 1 MHz in active mode, and wake from standby in less than 1 µs. They integrate a 16-bit hardware multiplier, Timer_A, USART, and five power-saving modes. Engineers typically use them for single-phase electricity meters, digital power monitoring, and sensor applications requiring extended battery life in portable measurement devices.
Datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 1 mA | 7 mA | 2.2 V, 3.6 V; ierase; over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) | TI datasheet, p. 26 — over recommended ranges of supply voltage and operating free-air temperat… |
| supply voltage range | 1.8 V | — | 3.6 V | VCC, RSELx, MODx ranges of supply voltage and operating free air temperature (unless otherwise noted) | TI datasheet, p. 19 — over recommended ranges of supply voltage and operating free-air temperat… |
| abs max voltage (abs max) | -300 mV | — | 4.1 V | TI datasheet, p. 9 — 5.1 Absolute Maximum Ratings | |
| operating temperature | -40 °C | — | 85 °C | ta; 5.3 Recommended Operating Conditions $ ^{(1)(2)} $ | TI datasheet, p. 9 — 5.3 Recommended Operating Conditions |
| clock frequency | — | 1 MHz | 1.1 MHz | SD24LP = 0 (low-power mode disabled); fsd24 | TI datasheet, p. 23 — over recommended ranges of supply voltage and operating free-air temperat… |
| input capacitance | — | 5 pF | — | VIN = VSSor VCC; ci; over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) | TI datasheet, p. 13 — over recommended ranges of supply voltage and operating free-air temperat… |
| cpu speed | — | 12 MHz | — | TI datasheet, p. 1 | |
| program memory size | — | 3.91 KB | — | flash | TI datasheet, p. 5 — Table 3-1. Device Comparison |
| ram size | — | 256 B | — | ram | TI datasheet, p. 5 — Table 3-1. Device Comparison |
| io count | — | 11 | — | TI datasheet, p. 5 — Table 3-1. Device Comparison | |
| adc resolution | — | 24 bit | — | TI datasheet, p. 1 | |
| core size | — | 16 bit | — | TI datasheet, p. 1 | |
| data retention | 100 year | — | — | TJ = 25°C; tretention; over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) | TI datasheet, p. 26 — over recommended ranges of supply voltage and operating free-air temperat… |
| program erase cycles | 10 kcycle | 100 kcycle | — | program; over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) | TI datasheet, p. 26 — over recommended ranges of supply voltage and operating free-air temperat… |
| load capacitance | — | 1 pF | — | XT2OFF = 0(3); cl; over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) | TI datasheet, p. 21 — over recommended ranges of supply voltage and operating free-air temperat… |
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Frequently asked questions
What is the absolute maximum voltage rating for the MSP430AFE221?
The absolute maximum voltage is 4.1 V.
What is the ADC resolution of the MSP430AFE221?
The ADC resolution is 24 bit.
What is the clock frequency when SD24LP = 0 (low-power mode disabled) and fsd24 is active?
The clock frequency is 1 MHz.
What is the core size of the MSP430AFE221?
The core size is 16 bit.
What is the CPU speed of the MSP430AFE221?
The CPU speed is 12 MHz.
What is the data retention time for the MSP430AFE221?
The data retention is 100 year at TJ = 25°C; tretention; over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted).
What is the input capacitance (ci) of the MSP430AFE221?
The input capacitance is 5 pF when VIN = VSS or VCC, over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted).
How many I/O pins does the MSP430AFE221 have?
The MSP430AFE221 has 11 I/O pins.
What is the load capacitance when XT2OFF = 0(3) and cl, over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)?
The load capacitance is 1 pF.
What is the maximum operating temperature (ta) for the MSP430AFE221?
The maximum operating temperature (ta) is 85 °C.
How many program erase cycles are supported by the MSP430AFE221?
The MSP430AFE221 supports 100 kcycle of program erase cycles under program conditions over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted).
What is the program memory size of the MSP430AFE221?
The program memory size is 3.91 KB (flash).