JN5139/001,515 NXP Semiconductors, JN5139/001,515 Datasheet - Page 36
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JN5139/001,515
Manufacturer Part Number
JN5139/001,515
Description
IC MCU 32BIT 56QFN
Manufacturer
NXP Semiconductors
Datasheet
1.JN5139-Z01-V.pdf
(82 pages)
Specifications of JN5139/001,515
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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12 Timers
12.1 Peripheral Timer / Counters
Two general-purpose timer / counter units are available that can be independently configured to operate in one of five
modes. The timers have the following features:
The clock source for the timer unit is fed from the 16MHz system clock. This clock passes to a 16-bit prescaler where
a value of 0 leaves the clock unmodified and other values divide it by 2
of 2 applied to the 16MHz system clock source results in a timer clock of 4MHz. The value of the prescaler is set
through software.
The counter is optionally gated by a signal on the clock / gate input (TIMxCK_GT). If the gate function is selected the
counter is frozen when the clock/gate input is high.
36
TIMxCK_GT
TIMxCAP
Sys Clk
•
•
•
•
•
•
•
•
5-bit prescaler, divides system clock by 2
Clocked from internal system clock
16-bit counter, 16-bit Rise and Fall (period) registers
Timer: can generate interrupts off Rise and Fall counts. Can be gated by external signal
Counter: counts number of transitions on external event signal. Can use low-high, high-low or both
transitions
PWM/Single pulse: outputs repeating Pulse Width Modulation signal or a single pulse. Can set period and
mark-space ratio
Capture: measures times between transitions of an applied signal.
Delta-Sigma: Return-To-Zero (RTZ) and Non-Return-to-Zero (NRZ) modes
Select
Edge
Generator
Prescaler
Capture
Capture
Enable
Reset
Gate
Gate
S/w
Reset Generator
Delta-Sigma
Counter
PWM/Δ−Σ
Figure 26: Timer Unit Block Diagram
PWM/Δ−Σ
System
Reset
Rise
Fall
Single
Reset
Shot
JN-DS-JN5139 1v9
prescale value
INT
as the clock to the timer (prescaler range is 0 to 16)
Generator
Int Enable
Interrupt
=
=
prescale
value. For example, a prescale value
S
R
© NXP Laboratories UK 2010
PW M/Delta-
Sigma
OE
TIMxOUT
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