SAF-C161U-LF V1.3 Infineon Technologies, SAF-C161U-LF V1.3 Datasheet - Page 218

• 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
Timer 2 and Timer 4 can be controlled by software only, since no second timer input
exist, see also Figure 57.
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.
In addition, T3OTL can be used in conjunction with the timer over/underflows as an input
for the counter function or as a trigger source for the reload function of the auxiliary
timers T2 and T4. For this purpose, the state of T3OTL does not have to be available at
any port pin, because an internal connection is provided for this option.
Timer 3 in Timer Mode
Timer mode for the core timer T3 is selected by setting bit field T3M in register T3CON
to ‘000
In this mode, T3 is clocked with the module clock f
prescaler, which is controlled by bit field T3I and bit FM1. The input frequency f
T3 and its resolution r
be seen from the following formula:
Table 36
This formula also applies to the Gated Timer Mode of T3 and to the auxiliary timers T2
and T4 in timer and gated timer mode, where applicable.
f
24
24
36
36
36
Timer
[MHz]
B
’.
f
T3
Example for Timer 3 Frequencies and Resolutions
=
8 * 2
T3I
’111’
’000’
’000’
’100’
’111’
T3
<T3I - FM1>
f
Timer
are scaled linearly with lower module clock frequencies, as can
FM1
0
1
0
0
1
218
r
T3
[ s] =
f
23.44
6000.0
4500.0
281.25
70.31
T3
Timer
[KHz]
8 * 2
General Purpose Timer Unit
f
divided by a programmable
Timer
<T3I - FM1>
[MHz]
r
42.67
0.17
0.22
3.55
14.22
T3
[ s]
T3
2001-04-19
for timer
C161U