Datasheet

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STM32F091xB STM32F091xC Description
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Table 2. STM32F091xB/xC family device features and peripheral counts
Peripheral STM32F091Cx STM32F091Rx STM32F091Vx
Flash memory (Kbyte) 128 256 128 256 128 256
SRAM (Kbyte) 32
Timers
Advanced
control
1 (16-bit)
General
purpose
5 (16-bit)
1 (32-bit)
Basic 2 (16-bit)
Comm.
interfaces
SPI [I
2
S]
(1)
2 [2]
I
2
C2
USART 6 8
CAN 1
CEC 1
12-bit ADC
(number of channels)
1
(10 ext. + 3 int.)
1
(16 ext. + 3 int.)
12-bit DAC
(number of channels)
1
(2)
Analog comparator 2
GPIOs 38 52 88
Capacitive sensing
channels
17 18 24
Max. CPU frequency 48 MHz
Operating voltage 2.0 to 3.6 V
Operating temperature
Ambient operating temperature: -40°C to 85°C / -40°C to 105°C
Junction temperature: -40°C to 105°C / -40°C to 125°C
Packages
LQFP48
UFQFPN48
LQFP64
UFBGA64
WLCSP64
LQFP100
UFBGA100
1. The SPI interface can be used either in SPI mode or in I
2
S audio mode.
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