ST92F120V1Q7 STMicroelectronics, ST92F120V1Q7 Datasheet - Page 163

• Manufacturer Part Number: ST92F120V1Q7
• Description: Microcontrollers (MCU) Flash 128K SPI/I2C
• Manufacturer: STMicroelectronics

Specifications of ST92F120V1Q7

• Data Bus Width: 8 bit, 16 bit
• Program Memory Type: Flash
• Program Memory Size: 128 KB
• Data Ram Size: 4 KB
• Interface Type: I2C, SPI
• Maximum Clock Frequency: 24 MHz
• Number Of Programmable I/os: 77
• Number Of Timers: 5
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Package / Case: PQFP-100
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 16 Channel
• Lead Free Status / Rohs Status: No

MULTIFUNCTION TIMER (Cont’d)
10.4.3.13 Autodiscrimination Mode
The phase between two pulses (respectively on in-
put pin B and input pin A) generates a one step up
(or down) count, so that the up/down control and
the counter clock are both external. Thus, if the ris-
ing edge of TxINB arrives when TxINA is at a low
level, the timer is incremented (no action if the ris-
ing edge of TxINB arrives when TxINA is at a high
level). If the falling edge of TxINB arrives when
TxINA is at a low level, the timer is decremented
(no action if the falling edge of TxINB arrives when
TxINA is at a high level).
Setting the UDC bit in the TCR register has no ef-
fect in this configuration.
10.4.3.14 TxINA = Trigger - TxINB = Ext. Clock
The signal applied to input pin A acts as a trigger
signal on REG0R, initiating the action for which the
register was programmed (i.e. a reload or cap-
ture), while the signal applied to input pin B is used
as the clock for the prescaler.
(*) The timer is in One shot mode and REG0R in
reload mode
10.4.3.15 TxINA = Ext. Clock - TxINB = Trigger
The signal applied to input pin B acts as a trigger,
performing a capture on REG1R, while the signal
applied to input pin A is used as the clock for the
prescaler.
10.4.3.16 TxINA = Trigger - TxINB = Gate
The signal applied to input pin A acts as a trigger
signal on REG0R, initiating the action for which the
register was programmed (i.e. a reload or cap-
ture), while the signal applied to input pin B acts as
a gate signal for the internal clock (i.e. the counter
runs only when the gate signal is at a low level).
MULTIFUNCTION TIMER (MFT)
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