Datasheet

MC9RS08KB12 Series MCU Data Sheet, Rev. 5
Electrical Characteristics
Freescale Semiconductor28
3.9.2 TPM/MTIM Module Timing
Synchronizer circuits determine the shortest input pulses that can be recognized or the fastest clock that
can be used as the optional external source to the timer counter. These synchronizers operate from the
current bus rate clock.
Figure 32. Timer External Clock
Figure 33. Timer Input Capture Pulse
3.10 Analog Comparator (ACMP) Electrical
Table 11. TPM Input Timing
Num C Rating Symbol Min Max Unit
1 D External clock frequency f
TPMext
DC f
Bus
/4 MHz
2 D External clock period t
TPMext
4—t
cyc
3 D External clock high time t
clkh
1.5 — t
cyc
4 D External clock low time t
clkl
1.5 — t
cyc
5 D Input capture pulse width t
ICPW
1.5 — t
cyc
Table 12. Analog Comparator Electrical Specifications
Num C Characteristic Symbol Min Typical Max Unit
1 D Supply voltage V
DD
1.80 — 5.5 V
2 P Supply current (active) I
DDAC
—2035μA
3 D Analog input voltage
1
V
AIN
V
SS
– 0.3 — V
DD
V
4 C Analog input offset voltage
1
V
AIO
—2040mV
5 C Analog Comparator hysteresis
1
V
H
3.0 9.0 15.0 mV
6 C Analog source impedance
1
R
AS
——10kΩ
7 P Analog input leakage current I
ALKG
——1.0μA
8 C Analog Comparator initialization delay t
AINIT
——1.0μs
t
TCLK
t
clkh
t
clkl
TCLK
t
ICPW
TPMCHn
t
ICPW
TPMCHn