MC9S08GB60ACFUE Freescale, MC9S08GB60ACFUE Datasheet - Page 126

• Manufacturer Part Number: MC9S08GB60ACFUE
• Manufacturer: Freescale

Specifications of MC9S08GB60ACFUE

• Cpu Family: HCS08
• Device Core Size: 8b
• Frequency (max): 40MHz
• Interface Type: I2C/SCI/SPI
• Total Internal Ram Size: 4KB
• # I/os (max): 56
• Number Of Timers - General Purpose: 8
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 1.8/2.08V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: LQFP
• Program Memory Type: Flash
• Program Memory Size: 60KB
• Lead Free Status / RoHS Status: Compliant

Internal Clock Generator (S08ICGV2)
7.5.3
126
Reset
REFST
CLKST
ICG
ERCS
LOCK
LOCS
LOLS
Field
7:6
5
4
3
2
1
0
W
R
IF
ICG
Clock Mode Status — The CLKST bits indicate the current clock mode. The CLKST bits don’t update
immediately after a write to the CLKS bits due to internal synchronization between clock domains.
00 Self-clocked
01 FLL engaged, internal reference
10 FLL bypassed, external reference
11 FLL engaged, external reference
Reference Clock Status — The REFST bit indicates which clock reference is currently selected by the
Reference Select circuit.
0 External Clock selected.
1 Crystal/Resonator selected.
FLL Loss of Lock Status — The LOLS bit is an indication of FLL-lock status. If LOLS is set, it remains set until
cleared by clearing the ICGIF flag or an MCU reset.
0 FLL has not unexpectedly lost lock since LOLS was last cleared.
1 FLL has unexpectedly lost lock since LOLS was last cleared, LOLRE determines action taken.
FLL Lock Status — The LOCK bit indicates whether the FLL has acquired lock. The LOCK bit is cleared in off,
self-clocked, and FLL bypassed modes.
0 FLL is currently unlocked.
1 FLL is currently locked.
Loss Of Clock Status — The LOCS bit is an indication of ICG loss-of-clock status. If LOCS is set, it remains set
until cleared by clearing the ICGIF flag or an MCU reset.
0 ICG has not lost clock since LOCS was last cleared.
1 ICG has lost clock since LOCS was last cleared, LOCRE determines action taken.
External Reference Clock Status — The ERCS bit is an indication of whether or not the external reference clock
(ICGERCLK) meets the minimum frequency requirement.
0 External reference clock is not stable, frequency requirement is not met.
1 External reference clock is stable, frequency requirement is met.
ICG Interrupt Flag — The ICGIF read/write flag is set when an ICG interrupt request is pending. It is cleared by
a reset or by reading the ICG status register when ICGIF is set and then writing a 1 to ICGIF. If another ICG
interrupt occurs before the clearing sequence is complete, the sequence is reset so ICGIF would remain set after
the clear sequence was completed for the earlier interrupt. Writing a 0 to ICGIF has no effect.
0 No ICG interrupt request is pending.
1 An ICG interrupt request is pending.
0
7
Status Register 1 (ICGS1)
CLKST
= Unimplemented or Reserved
0
6
Figure 7-14. ICG Status Register 1 (ICGS1)
Table 7-8. ICGS1 Field Descriptions
REFST
MC9S08GB60A Data Sheet, Rev. 2
0
5
LOLS
0
4
Description
LOCK
3
0
LOCS
0
2
Freescale Semiconductor
ERCS
0
1
ICG
1
0
0
IF