Datasheet

dsPIC33FJ06GS101/X02 and dsPIC33FJ16GSX02/X04
DS70318F-page 306 © 2008-2012 Microchip Technology Inc.
TABLE 24-24: TIMER2 EXTERNAL CLOCK TIMING REQUIREMENTS
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 ≤ T
A ≤ +125°C for Extended
Param
No.
Symbol Characteristic Min. Typ. Max. Units Conditions
TB10 T
TXH TxCK High
Time
Synchronous Greater of:
20 ns or
(T
CY + 20)/N
— — ns Must also meet
parameter TB15
N = prescale
value (1, 8, 64,
256)
TB11 T
TXLTxCK Low
Time
Synchronous Greater of:
20 ns or
(T
CY + 20)/N
— — ns Must also meet
parameter TB15
N = prescale
value (1, 8, 64,
256)
TB15 TTXP TxCK Input
Period
Synchronous Greater of:
40 ns or
(2 T
CY + 40)/N
— — ns N = prescale
value (1, 8, 64,
256)
TB20 T
CKEXTMRL Delay from External TxCK
Clock Edge to Timer
Increment
0.75 TCY + 40 — 1.75 TCY + 40 ns —
TABLE 24-25: TIMER3 EXTERNAL CLOCK TIMING REQUIREMENTS
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 ≤ T
A ≤ +125°C for Extended
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
TC10 T
TXH TxCK High
Time
Synchronous TCY + 20 — — ns Must also meet
parameter TC15
TC11 T
TXL TxCK Low
Time
Synchronous TCY + 20 — — ns Must also meet
parameter TC15
TC15 T
TXP TxCK Input
Period
Synchronous,
with prescaler
2 TCY + 40 — — ns —
TC20 T
CKEXTMRL Delay from External TxCK
Clock Edge to Timer
Increment
0.75 TCY + 40 — 1.75 TCY + 40 — —