![Micronas SDA 6000 User Manual Download Page 164](http://html1.mh-extra.com/html/micronas/sda-6000/sda-6000_user-manual_1787802164.webp)
SDA 6000
PRELIMINARY DATA SHEET
Version 2.1
Peripherals
7 - 6
Micronas
In gated timer mode, the timer will only run if T3R is set and the gate is active (high or
low, as programmed).
Note: When bit T2RC/T4RC in timer control register T2CON/T4CON is set, T3R will also
control (start and stop) auxiliary timer T2/T4.
Count Direction Control
The count direction of the core timer can either be controlled by software or by the
external input line T3EUD (Timer T3 External Up/Down Control Input). These options are
selected by bits T3UD and T3UDE in control register T3CON. When the up/down control
is executed by software (bit T3UDE = ‘0’), the count direction can be altered by setting
or clearing bit T3UD. When T3UDE = ‘1’, line T3EUD is selected to be the controlling
source of the count direction. However, bit T3UD can still be used to reverse the actual
count direction, as shown in the table below. If T3UD = ‘0’ and line T3EUD shows a low
level, the timer is counting up. With a high level T3EUD, the timer is counting down. If
T3UD = ‘1’, a high level at line T3EUD specifies counting up, and a low level specifies
counting down. The count direction can be changed regardless of whether the timer is
running or not.
When line T3EUD is used as external count direction control input, its associated port
pin must be configured as input.
Note: The direction control works in the same way for core timer T3 and for auxiliary
timers T2 and T4. Therefore the lines and bits are named Tx
…
Timer 3 Overflow/Underflow Monitoring
An overflow or underflow of timer T3 will clock the overflow toggle latch T3OTL in control
register T3CON. T3OTL can also be set or reset by software. Bit T3OE (Overflow/
Underflow Output Enable) in register T3CON enables the state of T3OTL to be
monitored via an external line T3OUT. If this line is linked to an external port pin, which
has to be configured as output, T3OTL can be used to control external HW.
Table 7-1
Core Timer T3 Count Direction Control
Line T3EUD Bit T3UDE
Bit T3UD
Count Direction
X
0
0
Count Up
X
0
1
Count Down
0
1
0
Count Up
1
1
0
Count Down
0
1
1
Count Down
1
1
1
Count Up
Summary of Contents for SDA 6000
Page 3: ...Contents Overview...
Page 21: ...Pin Description...
Page 22: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Pin Descriptions 2 3 Micronas 2 Pin Descriptions...
Page 29: ...Architectural Overview...
Page 33: ...C16X Microcontroller...
Page 88: ...Interrupt and Trap Function...
Page 122: ...System Control Configuration...
Page 159: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 System Control Configuration 6 40 Micronas...
Page 160: ...Peripherals...
Page 282: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Peripherals 7 124 Micronas...
Page 283: ...Clock System...
Page 284: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Clock System 8 3 Micronas 8 Clock System...
Page 288: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Clock System 8 8 Micronas...
Page 289: ...Sync System...
Page 290: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Sync System 9 3 Micronas 9 Sync System...
Page 301: ...Display Generator...
Page 348: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Display Generator 10 50 Micronas...
Page 349: ...D A Converter...
Page 352: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 D A Converter 11 6 Micronas...
Page 353: ...Slicer and Acquisition...
Page 381: ...Register Overview...
Page 398: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Register Overview 13 20 Micronas...
Page 399: ...Elelctrical Characteristics...
Page 411: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Electrical Characteristics 14 14 Micronas...