mc68hc05j5ap Freescale Semiconductor, Inc, mc68hc05j5ap Datasheet - Page 64

• Manufacturer Part Number: mc68hc05j5ap
• Description: General Description The Mc68hc05j5a Is A Member Of The Low-cost High-performance M68hc05 Family Of 8-bit Microcontroller Units Mcus . The M68hc05 Family Is Based On The Customer-speci Ed Integrated Circuit Design Strategy. All Mcus In The Family
• Manufacturer: Freescale Semiconductor, Inc

GENERAL RELEASE SPECIFICATION
9-6
TCAP
PB0/
TCAPS — Timer Input Capture Comparator Enable
When the comparator and V
becomes an input pin, irrespective of DDR setting. However, it is recommended to
set PB0 as an input first (via DDR), before enabling the comparator. A read of PB0
will reflect the TCAP pin status, not the PB0 register bit.
The comparator uses the V
typical output as shown in Figure 9-9.
Switching off the V
power when the MCU is in a low power mode.
T1CC
$0002
reset:
1 = Timer input capture comparator is selected.
0 = Timer input capture comparator schmitt trigger is selected.
Voltage
Reference
W
R
TCAPS
BIT 7
V
Figure 9-7. Timer1 Capture Control Register
Figure 9-8. TCAP Input Signal Conditioning
REF
0
EN
Freescale Semiconductor, Inc.
For More Information On This Product,
V
DD
DD
/2 voltage reference by clearing TCAPS=0 will further save
BIT 6
÷ 2
0
Go to: www.freescale.com
DD
DD
/2 reference as the compare voltage, resulting in a
/2 reference are enabled, PB0 pin will automatically
BIT 5
16-BIT TIMER
July 16, 1999
0
Schmitt Trigger
+
–
NOTE
Comparator
BIT 4
0
PB0 I/O
PORT LOGIC
BIT 3
MUX
0
BIT 2
0
To edge select and
detect logic
TCAPS bit
BIT 1
0
MC68HC05J5A
REV 2.1
BIT 0
0