MC68HC12D60 Datasheet, PDF (374/432 Pages) Motorola, Inc – Advance Information - Rev 4.0

Freescale Semiconductor, Inc.
Electrical Specifications
Table 20-11. Pulse Width Modulator Characteristics
V_DD = 5.0 Vdc ±10%, V_SS = 0 Vdc, T_A = T_L to T_H, unless otherwise noted
Characteristic
Symbol
Min
Max
E-clock frequency
f_eclk
0.004
8.0
A-clock frequency
Selectable
f_aclk
f_eclk/128
f_eclk
B-clock frequency
Selectable
f_bclk
f_eclk/128
f_eclk
Left-aligned PWM frequency
8-bit
16-bit
Left-aligned PWM resolution
Center-aligned PWM frequency
8-bit
16-bit
Center-aligned PWM resolution
f_lpwm
r_lpwm
f_cpwm
r_cpwm
f_eclk/1M
f_eclk/256M
f_eclk/4K
f_eclk/2M
f_eclk/512M
f_eclk/4K
f_eclk/2
f_eclk/2
f_eclk
f_eclk
f_eclk
f_eclk
Unit
MHz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Table 20-12. Control Timing
Characteristic
Frequency of operation
E-clock period
External oscillator frequency
Processor control setup time
t_PCSU = t_cyc/2 + 20
Reset input pulse width
To guarantee external reset vector
Minimum input time (can be preempted by internal reset)
Mode programming setup time
Mode programming hold time
Interrupt pulse width, IRQ edge-sensitive mode
PW_IRQ = 2t_cyc + 20
Wait recovery startup time
Timer input capture pulse width
PW_TIM = 2t_cyc + 20
1. When using a quartz crystal, operation should be restricted to 8MHz.
Symbol
f_o
t_cyc
f_eo
t_PCSU
PW_RSTL
t_MPS
t_MPH
PW_IRQ
t_WRS
PW_TIM
8.0 MHz
Min Max
0.004 8.0
0.125 250
0.5 _16.0⁽¹⁾
Unit
MHz
µs
MHz
82
—
ns
32
—
t_cyc
2
—
t_cyc
4
—
t_cyc
10
—
ns
270 —
ns
—
4
t_cyc
270 —
ns
Advance Information
374
Electrical Specifications
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68HC(9)12D60 — Rev 4.0
MOTOROLA