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C8051F90x-91x Ultra Low-Power MCUs

The C8051F90x/1x is the industry’s lowest power microcontroller (MCU), consuming as little as 160 µA/MHz in active mode and 10 nA in sleep mode with full memory retention. C8051F90x/1x expands the award-winning C8051F92x/3x low power MCU product portfolio by offering lower memory devices with further power reduction and a higher resolution ADC. C8051F90x/1x low power MCUs are fully software and hardware compatible with C8051F92x/3x MCUs and operate from 0.9 – 3.6 V to enable single cell battery designs.

C8051F9xx ultra low-power MCUs have been designed from the ground up to be the most power-efficient MCUs in the industry. The end result is a solution that has been optimized to be the industry’s best across all metrics necessary to be truly considered low power – active mode, sleep mode and wake-up time.

Sleep current as low as
50nA
Min Vdd
0.9 V

C8051F90x-91x Common Specs

  • Industry’s lowest active and sleep currents
  • 160 µA/MHz active mode
  • 10 nA sleep with BOD disabled
  • 50 nA sleep with BOD enabled
  • 300 nA sleep with internal RTC
  • 600 nA sleep with external crystal
  • LDO voltage regulator
  • 2 µS wake-up time
  • 1.5 µS analog settling time
  • 25 MHz, single-cycle 8051 compatible CPU
  • 12-bit ADC
  • Up to 16 kB Flash, 512 bytes SRAM
  • 768 bytes of SRAM
  • 0.9 – 3.6 V operation
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Find the Right C8051F90x-91x Device Select Columns
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Part Number MCU Core MHz Flash (kB) RAM (kB) Dig I/O Pins 5 Volt Tolerant ADC 1 USB Temp Sensor Timers (16-bit) PCA Channels ADC 2 DAC Comparators UART SPI I2C HS I2C Slave I2S EMIF CAN LIN AES AEC-Q100 Vdd (min) Vdd (max) Package Type Package Size (mm) Internal Osc. VREF Debug Interface
C8051F901-GM
(NRND)
8051 25 8 0.75 16 10-bit, 15-ch., 300 ksps 4 6 — — 2 1 2 1 0 0 0 0 0 0.9 3.6 QFN24 4x4 ±2 C2
C8051F902-GM
(NRND)
8051 25 8 0.75 16 12-bit, 15-ch., 75 ksps 4 6 — — 2 1 2 1 0 0 0 0 0 0.9 3.6 QFN24 4x4 ±2 C2
C8051F911-GM
(NRND) Buy
8051 25 16 0.75 16 10-bit, 15-ch., 300 ksps 4 6 — — 2 1 2 1 0 0 0 0 0 0.9 3.6 QFN24 4x4 ±2 C2
C8051F912-GM
(NRND) Buy
8051 25 16 0.75 16 12-bit, 15-ch., 75 ksps 4 6 — — 2 1 2 1 0 0 0 0 0 0.9 3.6 QFN24 4x4 ±2 C2
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