EFM8BB51F16G
Full part number: EFM8BB51F16G-C-QFN20
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 EFM8BB51F16G does
The EFM8BB51 is a multi-purpose 8-bit microcontroller from the Silicon Labs Busy Bee family, available in 8 kB and 16 kB flash variants with commercial and industrial temperature grades. It operates on a single 1.8 to 5.5 V supply, reaches 50 MHz, and features a 12-bit ADC, four 16-bit timers, and two UARTs. This device is typically used in industrial automation, consumer electronics, motor control, and battery pack applications where space-constrained designs require integrated analog and communication peripherals.
Datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| supply voltage range | 1.8 V | — | 5.5 V | SiliconLabs datasheet, p. 20 — Table 4.2. General Operating Conditions | |
| input offset voltage | -10 mV | 1.7 mV | 10 mV | CPMD = 0, 25 °C; Analog Comparators (CMP) | SiliconLabs datasheet, p. 31 — Table 4.17. Analog Comparators (CMP) |
| cmrr | — | 69 dB | — | common; Analog Comparators (CMP) | SiliconLabs datasheet, p. 31 — Table 4.17. Analog Comparators (CMP) |
| operating temperature | -40 °C | — | 85 °C | -G grade; General Operating Conditions | SiliconLabs datasheet, p. 20 — Table 4.2. General Operating Conditions |
| clock frequency | 0 Hz | — | 50 MHz | Clock provided at EXTCLK pin; External Clock Input | SiliconLabs datasheet, p. 27 — Table 4.13. External Clock Input |
| propagation delay | — | — | 53 ns | Single CLU, external pin connections; propagation; Configurable Logic | SiliconLabs datasheet, p. 33 — Table 4.19. Configurable Logic |
| psrr | — | 73 dB | — | At 1 kHz; 4.1.14 Analog to Digital Converter (ADC) | SiliconLabs datasheet, p. 29 — 4.1.14 Analog to Digital Converter (ADC) |
| cpu speed | — | 50 MHz | — | SiliconLabs datasheet, p. 20 — Table 4.2. General Operating Conditions | |
| program memory size | — | 15.6 KB | — | flash | SiliconLabs datasheet, p. 3 — Table 2.1. Ordering Information |
| ram size | — | 1.25 KB | — | ram | SiliconLabs datasheet, p. 3 — Table 2.1. Ordering Information |
| io count | — | 16 | — | SiliconLabs datasheet, p. 3 — Table 2.1. Ordering Information | |
| adc resolution | — | 12 bit | — | SiliconLabs datasheet, p. 28 — Table 4.14. Analog to Digital Converter (ADC) | |
| core size | — | 8 bit | — | SiliconLabs datasheet, p. 1 | |
| data retention | 10 year | — | — | TA≤ 125 °C; flash; Flash Memory Characteristics | SiliconLabs datasheet, p. 26 — Table 4.9. Flash Memory Characteristics |
| output voltage low | — | — | 600 mV | High drive, IOL = 10 mA, VDD≥ 3.0 V; General Purpose I/O | SiliconLabs datasheet, p. 32 — Table 4.18. General Purpose I/O |
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Frequently asked questions
What is the ADC resolution?
The ADC resolution is 12 bit.
What is the maximum clock frequency when the clock is provided at the EXTCLK pin?
The maximum clock frequency is 50 MHz when the clock is provided at the EXTCLK pin.
What is the common-mode rejection ratio (CMRR) for the Analog Comparators (CMP)?
The common-mode rejection ratio (CMRR) is 69 dB.
What is the core size of the EFM8BB51F16G-C-QFN20?
The core size is 8 bit.
What is the maximum CPU speed for the EFM8BB51F16G-C-QFN20?
The maximum CPU speed is 50 MHz.
What is the data retention time for the flash memory when TA≤ 125 °C?
The data retention is 10 year.
What is the input offset voltage for the Analog Comparators (CMP) when CPMD = 0 at 25 °C?
The input offset voltage is 1.7 mV.
How many I/O pins does the EFM8BB51F16G-C-QFN20 have?
The EFM8BB51F16G-C-QFN20 has 16 I/O pins.
What is the operating temperature for the EFM8BB51F16G-C-QFN20 under -G grade General Operating Conditions?
The operating temperature is 85 °C.
What is the output voltage low specification for General Purpose I/O with High drive when IOL = 10 mA and VDD≥ 3.0 V?
The output voltage low is 600 mV.
What is the program memory size of the EFM8BB51F16G-C-QFN20 in flash?
The program memory size is 15.6 KB.
What is the propagation delay for the EFM8BB51F16G-C-QFN20 under Single CLU, external pin connections; propagation; Configurable Logic conditions?
The propagation delay is 53 ns.