SAF-C161U-LF V1.3 Infineon Technologies, SAF-C161U-LF V1.3 Datasheet - Page 140

• 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
8.1
The two 8-bit ports P0H and P0L represent the higher and lower part of PORT0,
respectively. Both halfs of PORT0 can be written (eg. via a PEC transfer) without
effecting the other half.
If this port is used for general purpose I/O, the direction of each line can be configured
via the corresponding direction registers DP0H and DP0L.
Each port line of PORT0H can be switched into push/pull or open drain mode via the
open drain control register ODP0H.
For port pins configured as input (via DP0x or alternate function), an internal pull
transistor is connected to the pad if register P0xPUDEN = ’1’, no matter whether the
C161U is in normal operation mode or in power down mode. Either pulldown transistor
or pullup transistor will be selected via P0xPUDSEL.
For port pins configured as output, the internal pull transistors are always disabled. The
output driver is disabled in power down mode unless P0xPHEN = ’1’.
After reset, P0xPUDEN and P0xPUDSEL are set to HIGH signal, thereby providing the
default reset configuration 1111
Note: While this feature allows the user to start the C161U after reset in default
configuration without external pull devices, the default configuration may be
overwritten by stronger external pulldown devices. In this case, Software should
isable the internal pull’s after reset (see also next chapter ’Alternate Function’).
PORT0
H
to the C161U during reset.
140
Parallel Ports
2001-04-19
C161U