SAF-C161U-LF V1.3 Infineon Technologies, SAF-C161U-LF V1.3 Datasheet - Page 389

• 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

Note: It is not recommended to write to any part of bitfield FOCNT, especially not while
Output Frequency Calculation
The output frequency can be calculated as f
so f
and f
Figure 120
Note: The output signal (for FOSS=’1’) is high for the duration of 1 f
Data Sheet
Bit
FOSS
FOEN
(FORV=0)
(FORV=2)
(FORV=5)
1) FOSS=’1’, output of counter
2) FOSS=’0’, output of toggle latch
f
f
f
f
OUTmin
CPU
OUT
OUT
OUT
OUTmax
the counter is running. Writing to FOCNT prior to starting the counter is obsolete
because it will immediatley be reloaded from FORV. Writing to FOCNT during
operation may produce uninteded counter values.
values FORV > 0. For FORV = 0 the output signal corresponds to f
1)
2)
1)
2)
1)
2)
FOEN-->’1’
= f
= f
CPU
Signal Waveforms
CPU
Function
Frequency Output Signal Select
0: Output of the toggle latch: DC=50%.
1: Output of the reload counter: DC depends on FORV.
Frequency Output Enable
0: Frequency output generation stops when signal f
1: FOCNT is running, f
/ 128 (FORV = 3F
/ 1 (FORV = 00
H
H
, FOSS = ’1’).
, FOSS = ’0’),
The counter starts here
OUT
is gated to pin. 1st reload after 0-1 transition.
389
OUT
= f
CPU
/ ( (FORV+1) * 2
System Control Unit (CSCU)
The counter stops here
CPU
OUT
cycle for all reload
is/gets low.
(1-FOSS)
FOEN-->’0’
CPU
.
2001-04-19
),
C161U