DSPIC30F2010 Datasheet, PDF (165/203 Pages) Microchip Technology – High-Performance, 16-Bit Digital Signal Controllers

dsPIC30F2010
FIGURE 22-7:
TIMER EXTERNAL CLOCK TIMING CHARACTERISTICS
TxCK
TMRX
Tx10
Tx11
Tx15
OS60
Tx20
Note: “x” refers to Timer Type A or Timer Type B.
Refer to Figure 22-2 for load conditions.
TABLE 22-22: TIMER1 EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 2.5V to 5.5V
(unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
-40°C ≤ TA ≤ +125°C for Extended
Param
No.
Symbol
Characteristic
Min
Typ Max Units Conditions
TA10 TTXH
TxCK High Time Synchronous, 0.5 TCY + 20 —
—
ns Must also meet
no prescaler
parameter TA15
Synchronous,
10
—
—
ns
with prescaler
Asynchronous
10
—
—
ns
TA11 TTXL
TxCK Low Time Synchronous, 0.5 TCY + 20 —
—
ns Must also meet
no prescaler
parameter TA15
Synchronous,
10
—
—
ns
with prescaler
Asynchronous
10
—
—
ns
TA15 TTXP
TxCK Input Period Synchronous,
TCY + 10
—
—
ns
no prescaler
Synchronous, Greater of: —
—
— N = prescale
with prescaler
20 ns or
value
(TCY + 40)/N
(1, 8, 64, 256)
Asynchronous
20
—
—
ns
OS60 Ft1
SOSC1/T1CK oscillator input
DC
frequency range (oscillator enabled
by setting bit TCS (T1CON, bit 1))
—
50 kHz
TA20
TCKEXTMRL Delay from External TxCK Clock
Edge to Timer Increment
0.5 TCY
1.5 TCY —
© 2006 Microchip Technology Inc.
DS70118G-page 163