SAF-C161U-LF V1.3 Infineon Technologies, SAF-C161U-LF V1.3 Datasheet - Page 176

• 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

C161U
Dedicated Pins
XTAL1
XTAL2
Rx2
R
Q
C
C
A
B
Figure 42
External Oscillator Circuitry
Clock Mode Select CLKMODE CLKMODE must be LOW if an external crystal is used.
HIGH signal enables the direct clock input path and switches the internal oscillator in
power down mode..
Reset Input RSTIN allows to put the C161U into the well defined reset condition either
at power-up or external events like a hardware failure or manual reset. The input voltage
threshold of the RSTIN pin is raised compared to the standard pins in order to minimize
the noise sensitivity of the reset input.
Reset Output RSTOUT provides a special reset signal for external circuitry. RSTOUT
is activated at the beginning of the reset sequence, triggered via RSTIN, a watchdog
timer overflow or by the SRST instruction. RSTOUT remains active (low) until the EINIT
instruction is executed. This allows to initialize the controller before the external circuitry
is activated.
Power Supply pins VDD and GND provide the power supply for the digital logic of the
C161U. The respective VCC/VSS pairs should be decoupled as close to the pins as
possible. For best results it is recommended to implement two-level decoupling, eg. (the
widely used) 100 nF in parallel with 30...40 pF capacitors which deliver the peak
currents.
Note: All VDD pins and all GND pins must be connected to the power supply and ground,
respectively.
Data Sheet
176
2001-04-19