S9S12GN16F0VLF Freescale Semiconductor, S9S12GN16F0VLF Datasheet - Page 413
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S9S12GN16F0VLF
Manufacturer Part Number
S9S12GN16F0VLF
Description
16-bit Microcontrollers - MCU 16-bit16k Flash 2k RAM
Manufacturer
Freescale Semiconductor
Datasheet
1.S9S12G96F0CLL.pdf
(1292 pages)
Specifications of S9S12GN16F0VLF
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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The RTI can be used to generate hardware interrupts at a fixed periodic rate. If enabled (by setting
RTIE=1), this interrupt will occur at the rate selected by the CPMURTI register. At the end of the RTI
time-out period the RTIF flag is set to one and a new RTI time-out period starts immediately.
A write to the CPMURTI register restarts the RTI time-out period.
10.6.1.2
The S12CPMU generates a PLL Lock interrupt when the lock condition (LOCK status bit) of the PLL
changes, either from a locked state to an unlocked state or vice versa. Lock interrupts are locally disabled
by setting the LOCKIE bit to zero. The PLL Lock interrupt flag (LOCKIF) is set to 1 when the lock
condition has changed, and is cleared to 0 by writing a 1 to the LOCKIF bit.
10.6.1.3
When the OSCE bit is 0, then UPOSC stays 0. When OSCE = 1 the UPOSC bit is set after the LOCK bit
is set.
Upon detection of a status change (UPOSC) the OSCIF flag is set. Going into Full Stop Mode or disabling
the oscillator can also cause a status change of UPOSC.
Any change in PLL configuration or any other event which causes the PLL lock status to be cleared leads
to a loss of the oscillator status information as well (UPOSC=0).
Oscillator status change interrupts are locally enabled with the OSCIE bit.
10.6.1.4
In FPM the input voltage VDDA is monitored. Whenever VDDA drops below level V
LVDS is set to 1. When VDDA rises above level V
indicated by flag LVIF = 1, is triggered by any change of the status bit LVDS if interrupt enable bit
LVIE = 1.
10.6.1.5
The API sub-block can generate periodical interrupts independent of the clock source of the MCU. To
enable the timer, the bit APIFE needs to be set.
The API timer is either clocked by the Autonomous Clock (ACLK - trimmable internal RC oscillator) or
the Bus Clock. Timer operation will freeze when MCU clock source is selected and Bus Clock is turned
off. The clock source can be selected with bit APICLK. APICLK can only be written when APIFE is not
set.
1. For details please refer to “<st-blue>10.4.6 System Clock Configurations”
Freescale Semiconductor
PLL Lock Interrupt
Oscillator Status Interrupt
Low-Voltage Interrupt (LVI)
Autonomous Periodical Interrupt (API)
Losing the oscillator status (UPOSC=0) affects the clock configuration of
the system
1
. This needs to be dealt with in application software.
MC9S12G Family Reference Manual, Rev.1.23
NOTE
LVID
the status bit LVDS is cleared to 0. An interrupt,
S12 Clock, Reset and Power Management Unit (S12CPMU)
LVIA,
the status bit
415
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