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SAF-C161PI Datasheet(PDF) 36 Page - Infineon Technologies AG

Part # SAF-C161PI
Description  16-Bit Single-Chip Microcontroller
PDF  400 Pages
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Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

SAF-C161PI Datasheet(HTML) 36 Page - Infineon Technologies AG

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User’s Manual
2-20
1999-08
2.5
Protected Bits
The C161PI 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:
Σ = 45 protected bits.
Table 2-1
C161PI Protected Bits
Register
Bit Name
Notes
T2IC, T3IC, T4IC
T2IR, T3IR, T4IR
GPT1 timer interrupt request flags
T5IC, T6IC
T5IR, T6IR
GPT2 timer interrupt request flags
CRIC
CRIR
GPT2 CAPREL interrupt request flag
T3CON, T6CON
T3OTL, T6OTL
GPTx timer output toggle latches
S0TIC, S0TBIC
S0TIR, S0TBIR
ASC0 transmit(buffer) interrupt request flags
S0RIC, S0EIC
S0RIR, S0EIR
ASC0 receive/error interrupt request flags
S0CON
S0REN
ASC0 receiver enable flag
SSCTIC, SSCRIC
SSCTIR, SSCRIR SSC transmit/receive interrupt request flags
SSCEIC
SSCEIR
SSC error interrupt request flag
SSCCON
SSCBSY
SSC busy flag
SSCCON
SSCBE, SSCPE
SSC error flags
SSCCON
SSCRE, SSCTE
SSC error flags
ADCIC, ADEIC
ADCIR, ADEIR
ADC end-of-conv./overrun intr. request flag
ADCON
ADST
ADC start flag request flag
CC15IC...CC8IC
CC15IR...CC8IR
Fast external interrupt request flags
TFR
TFR.15,14,13
Class A trap flags
TFR
TFR.7,3,2,1,0
Class B trap flags
XP3IC...XP0IC
XP3IR...XP0IR
X-Peripheral interrupt request flags
ISNC
RTCIR
Interrupt node sharing request flag



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