MC9S08GT32CFD Freescale Semiconductor, MC9S08GT32CFD Datasheet - Page 121
MC9S08GT32CFD
Manufacturer Part Number
MC9S08GT32CFD
Description
MCU 8BIT 32K FLASH 48-QFN
Manufacturer
Freescale Semiconductor
Series
HCS08r
Datasheet
1.M68EVB908GB60E.pdf
(290 pages)
Specifications of MC9S08GT32CFD
Core Processor
HCS08
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
39
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-QFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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REFST — Reference Clock Status
LOLS — FLL Loss of Lock Status
LOCK — FLL Lock Status
LOCS — Loss Of Clock Status
ERCS — External Reference Clock Status
Freescale Semiconductor
The REFST bit indicates which clock reference is currently selected by the Reference Select circuit.
The LOLS bit is an indication of FLL lock status. If LOLS is set, it remains set until cleared by
software or an MCU reset.
The LOCK bit indicates whether the FLL has acquired lock. The LOCK bit is cleared in off,
self-clocked, and FLL bypassed modes.
The LOCS bit is an indication of ICG loss of clock status. If LOCS is set, it remains set until cleared
by software on an MCU reset.
The ERCS bit is an indication of whether or not the external reference clock (ICGERCLK) meets the
minimum frequency requirement.
1 = Crystal/Resonator selected.
0 = External Clock selected.
1 = FLL has unexpectedly lost lock since LOLS was last cleared, LOLRE determines action taken.
0 = FLL has not unexpectedly lost lock since LOLS was last cleared.
1 = FLL is currently locked.
0 = FLL is currently unlocked.
1 = ICG has lost clock since LOCS was last cleared, LOCRE determines action taken.
0 = ICG has not lost clock since LOCS was last cleared.
1 = External reference clock is stable, frequency requirement is met.
0 = External reference clock is not stable, frequency requirement is not met.
CLKST[1:0]
00
01
10
11
Table 7-9. CLKST Clock Mode Status
MC9S08GB/GT Data Sheet, Rev. 2.3
FLL bypassed, external reference
FLL engaged, external reference
FLL engaged, internal reference
Clock Status
Self-clocked
ICG Registers and Control Bits
121
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