SAF-C161U-LF V1.3 Infineon Technologies, SAF-C161U-LF V1.3 Datasheet - Page 222

• Manufacturer Part Number: SAF-C161U-LF V1.3
• Description: IC MCU ISDN 16BIT TTL TQFP-100
• Manufacturer: Infineon Technologies
• Series: C16xxr

Specifications of SAF-C161U-LF V1.3

• Core Processor: C166
• Core Size: 16-Bit
• Speed: 36MHz
• Connectivity: EBI/EMI, SPI, UART/USART, USB
• Peripherals: POR, PWM, WDT
• Number Of I /o: 56
• Program Memory Type: ROMless
• Ram Size: 3K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-LFQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Other names: SAFC161ULFV1.3X; SAFC161ULFV13XP; SP000007502

Data Sheet
T3 is clocked by each transition on one or both of the external input lines which gives 2-
fold or 4-fold resolution of the encoder input.
Figure 62
Bit field T3I in control register T3CON selects the triggering transitions (see table below).
In this mode the sequence of the transitions of the two input signals is evaluated and
generates count pulses as well as the direction signal. Depending on the chosen
Incremental Intrerface Mode, Rotation detection ‘110
interrupt can be generated. This interrupt is only generated if it’s enabled by setting bit
T3IREN in register T3CON. For the Rotation detection an interrupt will be generated
each time the count direction of timer 3 changes. For the Edge detection an interrupt will
be generated each time a count action for timer 3 occurs. Count direction, changes in
the count direction and count requests are monitored through the status bits T3RDIR,
T3CHDIR and T3EDGE in register T3CON. T3 is modified automatically according to the
speed and the direction of the incremental encoder. Therefore, the contents of timer T3
always represents the encoder’s current position.
T 3 E U D
T 3IN
Block Diagram of Core Timer T3 in Incremental Interface Mode
D etec t
S elect
P h ase
E d ge
T 3 l
T 3 U D
T 3R
XO R
E dg e
T 3
T 3 U D E
0
1
M U X
D e tection
T im e r T 3
222
C h an ge
R D IR
T 3
U p /
D o w n
C H D IR
B
T 3 O T L
’ or Edge Detection ‘111
T 3
General Purpose Timer Unit
T 3M
T 3M
T 3O E
Inte rru pt
R eq ue st
T 3O U T
E d ge
In terrup t
R otation
In terrup t
M C B03998
2001-04-19
C161U
B
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