mm912f634 Freescale Semiconductor, Inc, mm912f634 Datasheet - Page 242

• Manufacturer Part Number: mm912f634
• Description: Mm912f634 - Integrated S12 Based Relay Driver With Lin
• Manufacturer: Freescale Semiconductor, Inc

Functional Description and Application Information
4.32.2
This section lists and describes the signals that connect off chip.
4.32.2.1
RESET is an active low bidirectional reset pin. As an input it initializes the MCU asynchronously to a known start-up state. As an
open-drain output it indicates that a System Reset or Power-on Reset (internal to MCU) has been triggered.
Freescale Semiconductor
EXTAL
XTAL
VDD
VSS
RESET
Signal Description
RESET
4MHz-16MHz
Full swing
Oscillator
Pierce
COP
Watchdog
S12SMMC
Power on
detect
S12SCRG
OSC4MHZ
RDIV[2:0]
FLL Reference Clock
OSCEN
Illegal Address Access
Power-On Detect
UPOSC
Figure 72. Block diagram of 9S12I32PIMV1
REFS
MULT[6:0]
Reference
128 - 512
Divider
Oscillator
Monitor
COP time out
Reference
Monitor fail
TRIM[8:0]
Internal
Clock
Frequency locked
loop (FLL)
Digital
Controlled
Oscillator
(DCO)
Digital Filter
multiply by
1000 +
(2*MULT)
PORF
speed
adjust
DCO Clock
Generator
Reset
S12S Clocks and Reset Generator (S12SCRGV1)
BCLKS
LOCKIE
LOCKIF
LOCKST
ILAF
BDIV[3:0]
Internal Reference Clock
Bus
Divider
1 - 16
divide
by 5
&
divide
by 2
FLL Lock Interrupt
Power-On Reset
Oscillator Clock
System Reset
BDM Clock
Core Clock
Bus Clock
MM912F634
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