MC9RS08KA8_09 Datasheet, PDF (20/42 Pages) Freescale Semiconductor, Inc – MCU Block Diagram

Electrical Characteristics
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.
Table 11. TPM Input Timing
Num
1
2
3
4
5
C
Rating
D External clock frequency
D External clock period
D External clock high time
D External clock low time
D Input capture pulse width
Symbol
Min
f_TPMext
DC
t_TPMext
4
t_clkh
1.5
t_clkl
1.5
t_ICPW
1.5
Max
f_Bus/4
—
—
—
—
Unit
MHz
t_cyc
t_cyc
t_cyc
t_cyc
t_clkh
t_TCLK
TCLK
t_clkl
Figure 19. Timer External Clock
TPMCHn
t_ICPW
TPMCHn
t_ICPW
Figure 20. Timer Input Capture Pulse
3.10 Analog Comparator (ACMP) Electrical
Table 12. Analog Comparator Electrical Specifications
Num
C
Characteristic
Symbol
Min
Typical
Max
Unit
1
D Supply voltage
V_DD
1.80
—
2
P Supply current (active)
3
D Analog input voltage¹
4
P Analog input offset voltage¹
5
C Analog Comparator hysteresis¹
6
C Analog source impedance¹
I_DDAC
—
20
V_AIN
V_SS – 0.3
—
V_AIO
—
20
V_H
3.0
9.0
R_AS
—
—
7
P Analog input leakage current
I_ALKG
—
—
8
C Analog Comparator initialization delay
t_AINIT
—
—
5.5
V
35
μA
V_DD
V
40
mV
15.0
mV
10
kΩ
1.0
μA
1.0
μs
MC9RS08KA8 Series MCU Data Sheet, Rev. 4
20
Freescale Semiconductor