SAF-C161U-LF V1.3 Infineon Technologies, SAF-C161U-LF V1.3 Datasheet - Page 352

• 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
16.1
The current count value of the Watchdog Timer is contained in the Watchdog Timer
Register WDT, which is a non-bitaddressable read-only register. The operation of the
Watchdog Timer is controlled by its bitaddressable Watchdog Timer Control Register
WDTCON. This register specifies the reload value for the high byte of the timer, selects
the input clock prescaling factor and provides a flag that indicates a watchdog timer
overflow.
WDTCON (FFAE
The reset sources supported by the C161U are summarized in Table 90.
Note: Differentiation between long and short hardware reset, known from other Infineon
Bit
WDTIN
WDTR
SWR
SHWR
LHWR
reserved
WDTREL
15
C16x devices, is not supported.
14
Operation of the Watchdog Timer
13
Function
Watchdog Timer Input Frequency
Selection
‘0’: Input frequency is f
‘1’: Input frequency is f
Watchdog Timer Reset Indication Flag
Set by the watchdog timer on an
overflow.
Cleared by the SRVWDT instruction.
Software Reset
Set by the command SRST
Short Hardware Reset
Set by the input RSTIN
Long Hardware Reset
Set by the input RSTIN
Reserved
These bits are reserved
Watchdog Timer Reload Value (for the
high byte)
H
/ D7
WDTREL
12
rw
H
)
11
10
9
CPU
CPU
8
SFR
/ 2
/ 128
352
7
-
RESERVED
6
-
5
-
Note: C161U does not
distinguish between short
and long hardware reset.
LHW
R
4
r
Watchdog Timer (WDT)
SHW
R
Reset Value: 00XX
3
r
SWR
2
r
WDT
2001-04-19
R
1
r
C161U
WDT
rw
IN
0
H