ez80f91 ZiLOG Semiconductor, ez80f91 Datasheet - Page 129
ez80f91
Manufacturer Part Number
ez80f91
Description
Ez80 Acclaimplus!? Connectivity Assp Ez80f91 Assp
Manufacturer
ZiLOG Semiconductor
Datasheet
1.EZ80F91.pdf
(387 pages)
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Programmable Reload Timers
PS027001-0707
The eZ80F91 device features four programmable reload timers. The core of each timer is a
16-bit downcounter. In addition, each timer features a selectable clock source, adjustable
prescaling and operates in either SINGLE PASS or CONTINUOUS mode.
In addition to the basic timer functionality, some of the timers support specialty modes
that performs event counting, input capture, output compare, and PWM generation
functions. PWM mode supports four individually-configurable outputs and a power trip
function.
Each of the four timers available on the eZ80F91 device are controlled individually. They
do not share the same counters, reload registers, control registers, or interrupt signals. A
simplified block diagram of a programmable reload timer is illustrated in
Each timer features its own interrupt which is triggered either by the timer reaching zero
or after a successful comparison occurs. As with the other eZ80F91 interrupts, the priority
is fully programmable.
SCLK
RTC CLK
R
E
O
A
D
L
ECx
Figure 26. Programmable Reload Timer Block Diagram
DIV
EOC
Down Counter
M
U
X
IRQ Control
CONTROL
IC
16-Bit
IRQ
OC
PWR Trip
PWM
16
Input Capture
Registers
Output Compare
Comparator
Registers
Control
PWM
ICx
Programmable Reload Timers
16
Product Specification
eZ80F91 ASSP
PWM
OCx
Figure
26.
121
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