S9S12GN16F0CFT Freescale Semiconductor, S9S12GN16F0CFT Datasheet - Page 773
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S9S12GN16F0CFT
Manufacturer Part Number
S9S12GN16F0CFT
Description
16-bit Microcontrollers - MCU 16-bit16k Flash 2k RAM
Manufacturer
Freescale Semiconductor
Datasheet
1.S9S12GN16F0CFT.pdf
(1292 pages)
Specifications of S9S12GN16F0CFT
Rohs
yes
Core
S12
Processor Series
MC9S12G
Data Bus Width
16 bit
Maximum Clock Frequency
25 MHz
Program Memory Size
16 KB
Data Ram Size
1024 B
On-chip Adc
Yes
Operating Supply Voltage
3.13 V to 5.5 V
Operating Temperature Range
- 40 C to + 85 C
Package / Case
TSSOP-20
Mounting Style
SMD/SMT
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Writing to the timer port bit of an output compare pin does not affect the pin state. The value written is
stored in an internal latch. When the pin becomes available for general-purpose output, the last value
written to the bit appears at the pin.
When TCRE is set and TC7 is not equal to 0, then TCNT will cycle from 0 to TC7. When TCNT reaches
TC7 value, it will last only one bus cycle then reset to 0.
Note: in
23.4.3.1
The internal register whose output drives OCx can be programmed before the timer drives OCx. The
desired state can be programmed to this internal register by writing a one to CFORCx bit with TIOSx,
OCPDx and TEN bits set to one.
Setting OCPDx to zero allows the internal register to drive the programmed state to OCx. This allows a
glitch free switch over of port from general purpose I/O to timer output once the OCPDx bit is set to zero.
23.4.4
The pulse accumulator (PACNT) is a 16-bit counter that can operate in two modes:
Event counter mode — Counting edges of selected polarity on the pulse accumulator input pin, PAI.
Gated time accumulation mode — Counting pulses from a divide-by-64 clock. The PAMOD bit selects the
mode of operation.
The minimum pulse width for the PAI input is greater than two bus clocks.
Freescale Semiconductor
TC7 event
Set OCx: Write a 1 to FOCx while TEN=1, IOSx=1, OMx=1, OLx=1 and OCPDx=1
Clear OCx: Write a 1 to FOCx while TEN=1, IOSx=1, OMx=1, OLx=0 and OCPDx=1
Figure
TC7
Pulse Accumulator
OC Channel Initialization
23-31,if PR[2:0] is equal to 0, one prescaler counter equal to one bus clock
prescaler
counter
Figure 23-31. The TCNT cycle diagram under TCRE=1 condition
0
MC9S12G Family Reference Manual, Rev.1.23
1
-----
TC7-1
TC7 event
1 bus
clock
TC7
Timer Module (TIM16B8CV3)
0
775
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