S912XEP768J5MAGR Freescale Semiconductor, S912XEP768J5MAGR Datasheet - Page 88
S912XEP768J5MAGR
Manufacturer Part Number
S912XEP768J5MAGR
Description
16-bit Microcontrollers - MCU 16-bit 768K Flash
Manufacturer
Freescale Semiconductor
Datasheet
1.S912XEG128J2MAL.pdf
(1324 pages)
Specifications of S912XEP768J5MAGR
Rohs
yes
Core
HCS12X
Processor Series
MC9S12
Data Bus Width
16 bit
Maximum Clock Frequency
50 MHz
Program Memory Size
768 KB
Data Ram Size
48 KB
On-chip Adc
Yes
Operating Supply Voltage
3.3 V to 5 V
Operating Temperature Range
- 40 C to + 125 C
Package / Case
LQFP-144
Mounting Style
SMD/SMT
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
S912XEP768J5MAGR
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Chapter 1 Device Overview MC9S12XE-Family
1.13
The XCLKS is an input signal which controls whether a crystal in combination with the internal loop
controlled (low power) Pierce oscillator is used or whether full swing Pierce oscillator/external clock
circuitry is used. For this device XCLKS is mapped to PE7.
The XCLKS signal selects the oscillator configuration during reset low phase while a clock quality check
is ongoing. This is the case for:
The selected oscillator configuration is frozen with the rising edge of the RESET pin in any of these above
described reset cases.
88
•
•
•
Power on reset or low-voltage reset
Clock monitor reset
Any reset while in self-clock mode or full stop mode
Oscillator Configuration
Figure 1-10. Loop Controlled Pierce Oscillator Connections (XCLKS = 1)
Figure 1-11. Full Swing Pierce Oscillator Connections (XCLKS = 0)
MCU
Figure 1-12. External Clock Connections (XCLKS = 0)
EXTAL
XTAL
MC9S12XE-Family Reference Manual Rev. 1.25
MCU
MCU
EXTAL
EXTAL
XTAL
R
XTAL
B
=1MΩ ; R
R
S
R
B
S
Not Connected
specified by crystal vendor
Ceramic Resonator
Crystal or
CMOS-Compatible
External Oscillator
C
C
Ceramic Resonator
1
2
Crystal or
C
C
1
2
V
SSPLL
V
SSPLL
Freescale Semiconductor
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