mc68hc912d60c Freescale Semiconductor, Inc, mc68hc912d60c Datasheet - Page 413

• Manufacturer Part Number: mc68hc912d60c
• Description: Hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC912D60A — Rev. 3.1
Freescale Semiconductor
Frequency of operation
ECLK period
External oscillator frequency
Processor control setup time
Reset input pulse width
Mode programming setup time
Mode programming hold time
Interrupt pulse width, IRQ edge-sensitive mode
Wait recovery startup time
Timer input capture pulse width
1. When using a quartz crystal, see
t
To guarantee external reset vector
Minimum input time (can be preempted by internal reset)
PW
PW
PCSU
IRQ
TIM
= t
= 2t
= 2t
cyc
cyc
cyc
/2 + 20
NOTE:
+ 20
+ 20
Characteristic
RESET is recognized during the first clock cycle it is held low. Internal
circuitry then drives the pin low for 16 clock cycles, releases the pin, and
samples the pin level 9 cycles later to determine the source of the
interrupt.
Table 20-17
Table 20-12. Control Timing
Electrical Specifications
for allowable values.
Symbol
PW
PW
PW
t
t
t
t
PCSU
WRS
t
MPS
MPH
f
cyc
f
eo
RSTL
o
IRQ
TIM
0.004
0.125
82.5
Min
270
270
0.5
32
10
—
2
4
Electrical Specifications
8.0 MHz
16.0
Max
250
8.0
—
—
—
—
—
—
—
4
Technical Data
Tables of Data
(1)
MHz
MHz
Unit
t
t
t
t
µs
ns
ns
ns
ns
cyc
cyc
cyc
cyc
413