Datasheet

dsPIC30F1010/202X
DS70178C-page 250 Preliminary © 2006 Microchip Technology Inc.
TABLE 21-21: TIMER2 EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 3.3V and 5.0V (±10%)
(unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
-40°C ≤ T
A ≤ +125°C for Extended
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
TB10
TtxH
TxCK High Time Synchronous,
no prescaler
0.5 TCY + 20 — — ns Must also meet
parameter TB15
Synchronous,
with prescaler
10 — — ns
TB11 TtxL TxCK Low Time Synchronous,
no prescaler
0.5 TCY + 20 — — ns Must also meet
parameter TB15
Synchronous,
with prescaler
10 — — ns
TB15 TtxP TxCK Input Period Synchronous,
no prescaler
T
CY + 10 — — ns N = prescale
value (1, 8, 64, 256)
Synchronous,
with prescaler
Greater of:
20 ns or
(T
CY + 40)/N
TB20 TCKEXTMRL Delay from External TxCK Clock
Edge to Timer Increment
0.5 TCY — 1.5 TCY —
TABLE 21-22: TIMER3 EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 3.3V and 5.0V (±10%)
(unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
-40°C ≤ T
A ≤ +125°C for Extended
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
TC10
TtxH
TxCK High Time Synchronous 0.5 T
CY + 20 — — ns Must also meet
parameter TC15
TC11 TtxL TxCK Low Time Synchronous 0.5 T
CY + 20 — — ns Must also meet
parameter TC15
TC15 TtxP TxCK Input Period Synchronous,
no prescaler
T
CY + 10 — — ns N = prescale
value (1, 8, 64,
256)
Synchronous,
with prescaler
Greater of:
20 ns or
(T
CY + 40) /
N
TC20 T
CKEXTMRL Delay from External TxCK Clock
Edge to Timer Increment
0.5 TCY —1.5
T
CY
—