Datasheet

2009-2012 Microchip Technology Inc. DS70594D-page 297
dsPIC33FJXXXMCX06A/X08A/X10A
Note 1: These parameters are characterized, but are not tested in manufacturing.
Note 1: These parameters are characterized, but are not tested in manufacturing.
TABLE 26-23: TIMER2, TIMER4, TIMER6 AND TIMER8 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 TtxH TxCK High Time Synchronous
mode
Greater of
20 or (T
CY +
20)/N
ns Must also meet
parameter TB15
N = prescale
value
(1, 8, 64, 256)
——ns
TB11 TtxL TxCK Low Time Synchronous
mode
Greater of
20 or (T
CY +
20)/N
ns Must also meet
parameter TB15
N = prescale
value
(1, 8, 64, 256)
——ns
TB15 TtxP TxCK Input
Period
Synchronous
mode
Greater of
40 or (2T
CY
+ 40)/N
ns N = prescale
value
(1, 8, 64, 256)
TB20 T
CKEXT-
MRL
Delay from External TxCK Clock
Edge to Timer Increment
0.75 TCY +
40
—1.75
T
CY +
40
ns
TABLE 26-24: TIMER3, TIMER5, TIMER7 AND TIMER9 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 TtxH TxCK High Time Synchronous TCY + 20 ns Must also meet
parameter TC15
TC11 TtxL TxCK Low Time Synchronous T
CY + 20 ns Must also meet
parameter TC15
TC15 TtxP TxCK Input Period Synchronous
with prescaler
2 T
CY + 40 ns N = prescale
value
(1, 8, 64, 256)
TC20 TCKEXTMRL Delay from External TxCK Clock
Edge to Timer Increment
0.75 TCY +
40
—1.75 TCY
+ 40
——