SAF-C161U-LF V1.3 Infineon Technologies, SAF-C161U-LF V1.3 Datasheet - Page 166

• 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
P4PUDEN (FE86
P4PHEN (FE88
8.5.1
During external bus cycles that use segmentation (ie. an address space above
64 KByte) a number of Port 4 pins may output the segment address lines. The number
of pins that is used for segment address output determines the external address space
which is directly accessible. The other pins of Port 4 (if any) may be used for general
purpose I/O. If segment address lines are selected, the alternate function of Port 4 may
be necessary to access eg. external memory directly after reset. For this reason Port 4
will be switched to its alternate function automatically.
The number of segment address lines is selected via PORT0 during reset. The selected
value can be read from bitfield SALSEL in register RP0H (read only) eg. in order to check
the configuration during run time.
Table 29 summarizes the alternate functions of Port 4 depending on the number of
selected segment address lines (coded via bitfield SALSEL).
Bit
P4PUDEN.y
Bit
P4PHEN.y
15
15
-
-
14
14
-
-
Alternate Functions of PORT4
13
13
-
-
H
H
Function
Pulldown/Pullup Enable
P4PUDEN.y = 0: internal programmable pull transistor is disabled
P4PUDEN.y = 1: internal programmable pull transistor is enabled
/ 44
Function
Output Driver Enable in Power Down Mode
P4PHEN.y = 0: output driver is disabled in power down mode
P4PHEN.y = 1: output driver is enabled in power down mode
/ 43
12
12
-
-
H
)
H
)
11
11
-
-
10
10
-
-
9
9
-
-
8
8
-
-
SFR
SFR
166
7
7
-
-
6
6
-
-
5
5
-
-
P4
PUD
EN.4
P4
PHEN
.4
rw
rw
4
4
P4
PUD
EN.3
P4
PHEN
.3
rw
rw
Reset Value: - - 00
3
Reset Value: - - 00
3
P4
PUD
EN.2
P4
PHEN
.2
rw
rw
2
2
Parallel Ports
P4
PUD
EN.1
P4
PHEN
.1
rw
rw
2001-04-19
1
1
C161U
P4
PUD
EN.0
P4
PHEN
.0
rw
rw
0
0
H
H