SAF-C161U-LF V1.3 Infineon Technologies, SAF-C161U-LF V1.3 Datasheet - Page 44

• 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
3.5
C161U provides a special mechanism to protect bits which can be modified by the on-
chip hardware from being changed unintentionally by software accesses to related bits
(see also chapter “The Central Processing Unit”).
The following bits are protected:
Register
T2IC, T3IC, T4IC
T5IC, T6IC
CRIC
T3CON, T6CON
S0TIC, S0TBIC
S0RIC, S0EIC
S0CON
SSCTIC, SSCRIC
SSCEIC
SSCCON
SSCCON
SSCCON
TFR
TFR
XPyIC (y=3...0)
= 33 protected bits in the C161U
Protected Bits
Bit Name
T2IR, T3IR, T4IR
T5IR, T6IR
CRIR
T3OTL, T6OTL
S0TIR, S0TBIR
S0RIR, S0EIR
S0REN
SSCTIR, SSCRIR
SSCEIR
SSCBSY
SSCBE, SSCPE
SSCRE, SSCTE
TFR.15,14,13
TFR.7,3,2,1,0
XPyIR (y=3...0)
44
Notes
GPT1 timer interrupt request flags
GPT2 timer interrupt request flags
GPTx timer output toggle latches
ASC transmit(buffer) interrupt request
flags
ASC receive/error interrupt request flags
ASC receiver enable flag
SSC transmit/receive interrupt request
flags
SSC error interrupt request flag
SSC busy flag
SSC error flags
SSC error flags
Class A trap flags
Class B trap flags
X-Peripheral y interrupt request flag
GPT2 CAPREL interrupt request flag
Architectural Overview
2001-04-19
C161U