SAF-C161U-LF V1.3 Infineon Technologies, SAF-C161U-LF V1.3 Datasheet - Page 127

• 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: The non-maskable interrupt input pin NMI and the reset input RSTIN provide
7.8.1
The input pins that may be used for external interrupts are sampled every 16 TCL, ie.
external events are scanned and detected in timeframes of 16 TCL. C161U provides 2
external interrupt inputs that are sampled every 2 TCL, so external events are captured
faster than with standard interrupt inputs.
The pins of Port 2 (P2.1...P2.0) can individually be programmed to this fast interrupt
mode, where also the trigger transition (rising, falling or both) can be selected. The
External Interrupt Control register EXICON controls this feature for all 8 pins.
EXICON (F1C0
Note:
1. Although the C161U provides only two pins of Port 2 which can be used for fast
2. The fast external interrupt inputs are sampled every 2 TCL. The interrupt request
3. In Sleep mode, no clock is available. Therefore sampling is performed with
4. In Sleep mode fast external interrupts as well as the NMI input are controlled for spike
Data Sheet
Bit
EXIxES
15
EXI7ES
external interrupts, bit fields EXI7ES..EXI2ES must be set in order to use alternate
sources as fast external interrupts. For alternate sources, refer to register EXISEL on
page 128.
arbitration and processing, however, is executed every 8 TCL.
asynchronous structures.
suppression in the System Control Block. Input signals shorter than 10 ns are
suppressed, detection is guaranteed for minimum 150 ns input signals.
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another possibility for the CPU to react on an external input signal. NMI and RSTIN
are dedicated input pins, which cause hardware traps.
14
Fast External Interrupts
13
EXI6ES
H
External Interrupt x Edge Selection Field (x=7...0)
Function
0 0: Fast external interrupts disabled: standard mode
0 1: Interrupt on positive edge (rising)
1 0: Interrupt on negative edge (falling)
1 1: Interrupt on any edge (rising or falling)
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/ E0
12
H
)
11
EXI5ES
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10
9
EXI4ES
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8
ESFR
127
7
EXI3ES
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6
5
EXI2ES
Interrupt and Trap Functions
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4
Reset Value: 0000
3
EXI1ES
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2
2001-04-19
1
EXI0ES
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C161U
0
H