Datasheet

 2009-2012 Microchip Technology Inc. DS70591E-page 385
dsPIC33FJ32GS406/606/608/610 and dsPIC33FJ64GS406/606/608/610
FIGURE 27-5: TIMER1/2/3 EXTERNAL CLOCK TIMING CHARACTERISTICS
Note: Refer to Figure 27-1 for load conditions.
Tx11
Tx15
Tx10
Tx20
TMRx
OS60
TxCK
TABLE 27-23: TIMER1 EXTERNAL CLOCK TIMING REQUIREMENTS
(1)
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  T
A  +85°C for Industrial
-40°C  TA  +125°C for Extended
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
TA10 T
TXH T1CK High Time Synchronous,
no prescaler
TCY + 20 — — ns Must also meet
Parameter TA15,
N = prescale value
(1, 8, 64, 256)
Synchronous,
with prescaler
(TCY + 20)/N — — ns
Asynchronous 20 — — ns
TA11 T
TXL T1CK Low Time Synchronous,
no prescaler
(TCY + 20) — — ns Must also meet
Parameter TA15,
N = prescale value
(1, 8, 64, 256)
Synchronous,
with prescaler
(TCY + 20)/N — — ns
Asynchronous 20 — — ns
TA15 T
TXP T1CK Input
Period
Synchronous,
no prescaler
2 TCY + 40 — — ns
Synchronous,
with prescaler
Greater of:
40 ns or
(2 T
CY + 40)/N
— — — N = prescale value
(1, 8, 64, 256)
Asynchronous 40 — — ns
OS60 Ft1 SOSCI/T1CK Oscillator Input
Frequency Range (oscillator
enabled by setting bit, TCS
(T1CON<1>))
DC — 50 kHz
TA20 T
CKEXTMRL Delay from External T1CK Clock
Edge to Timer Increment
0.75 TCY + 40 — 1.75 TCY + 40 —
Note 1: Timer1 is a Type A.