SAF-C161U-LF V1.3 Infineon Technologies, SAF-C161U-LF V1.3 Datasheet - Page 69

• 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

PSW (FF10
ALU Status (N, C, V, Z, E, MULIP)
The condition flags (N, C, V, Z, E) within the PSW indicate the ALU status due to the last
recently performed ALU operation. They are set by most of the instructions due to
specific rules, which depend on the ALU or data movement operation performed by an
instruction.
After execution of an instruction which explicitly updates the PSW register, the condition
flags cannot be interpreted as described in the following, because any explicit write to
the PSW register supersedes the condition flag values, which are implicitly generated by
the CPU. Explicitly reading the PSW register supplies a read value which represents the
state of the PSW register after execution of the immediately preceding instruction.
Note: After reset, all of the ALU status bits are cleared.
• N-Flag: For most of the ALU operations, the N-flag is set to '1', if the most significant
Data Sheet
Bit
N
C
V
Z
E
MULIP
USR0
HLDEN,
ILVL, IEN
15
bit of the result contains a '1', otherwise it is cleared. In the case of integer operations
14
ILVL
rw
H
/ 88
13
Function
Negative Result
Set, when the result of an ALU operation is negative.
Carry Flag
Set, when the result of an ALU operation produces a carry bit.
Overflow Result
Set, when the result of an ALU operation produces an overflow.
Zero Flag
Set, when the result of an ALU operation is zero.
End of Table Flag
Set, when the source operand of an instruction is 8000
Multiplication/Division In Progress
‘0’: There is no multiplication/division in progress.
‘1’: A multiplication/division has been interrupted.
User General Purpose Flag
May be used by the application software.
Interrupt and EBC Control Fields
Define the response to interrupt requests and enable external bus
arbitration. (Described in section “Interrupt and Trap Functions”)
H
)
12
IEN
11
rw
HLD
EN
10
rw
9
-
-
8
-
-
SFR
69
7
-
-
USR0
rw
6
MUL
rw
IP
5
rw
E
4
Central Processor Unit
rw
Z
Reset Value: 0000
3
H
rw
or 80
V
2
H
rw
C
2001-04-19
1
.
C161U
rw
N
0
H