Microchip Technology MA330016 Data Sheet
dsPIC33FJ32GP202/204 and dsPIC33FJ16GP304
DS70290J-page 226
© 2007-2011 Microchip Technology Inc.
FIGURE 22-5:
TIMER1, 2 AND 3 EXTERNAL CLOCK TIMING CHARACTERISTICS
TABLE 22-22: TIMER1 EXTERNAL CLOCK TIMING REQUIREMENTS
(1)
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature
(unless otherwise stated)
Operating temperature
-40°C
≤ T
A
≤ +85°C for Industrial
-40°C
≤ T
A
≤ +125°C for Extended
Param
No.
Symbol
Characteristic
(2)
Min
Typ
Max
Units
Conditions
TA10
T
TX
H
TxCK High Time
Synchronous,
no prescaler
no prescaler
0.5 T
CY
+ 20
—
—
ns
Must also meet
parameter TA15
parameter TA15
Synchronous,
with prescaler
with prescaler
10
—
—
ns
Asynchronous
10
—
—
ns
TA11
T
TX
L
TxCK Low Time
Synchronous,
no prescaler
no prescaler
0.5 T
CY
+ 20
—
—
ns
Must also meet
parameter TA15
parameter TA15
Synchronous,
with prescaler
with prescaler
10
—
—
ns
Asynchronous
10
—
—
ns
TA15
T
TX
P
TxCK Input Period Synchronous,
no prescaler
T
CY
+ 40
—
—
ns
—
Synchronous,
with prescaler
with prescaler
Greater of:
20 ns or
(T
CY
+ 40)/N
—
—
—
N = prescale
value
(1, 8, 64, 256)
value
(1, 8, 64, 256)
Asynchronous
20
—
—
ns
—
OS60
Ft1
SOSC1/T1CK Oscillator Input
frequency Range (oscillator enabled
by setting bit TCS (T1CON<1>))
frequency Range (oscillator enabled
by setting bit TCS (T1CON<1>))
DC
—
50
kHz
—
TA20
T
CKEXTMRL
Delay from External TxCK Clock
Edge to Timer Increment
Edge to Timer Increment
0.5 T
CY
—
1.5 T
CY
—
—
Note 1: Timer1 is a Type A.
2: These parameters are characterized by similarity, but are not tested in manufacturing.
Note: Refer to
Tx11
Tx15
Tx10
Tx20
TMRx
OS60
TxCK