SAF-C161U-LF V1.3 Infineon Technologies, SAF-C161U-LF V1.3 Datasheet - Page 385

• 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

Security Level Switching
Two registers are provided for switching the security level, the security level command
register SCUSLC and the security level status register SCUSLS . The security level
command register SCUSLC is used to control the state machine for switching the
security level. SCUSLC register is loaded with the different commands of the command
sequence necessary to control a change of the security level. It is also used for the one
unlock command, which is necessary in the low protected mode to access one protected
register. The commands of the (unlock) command sequence are characterized by
certain pattern words (as AAAA
command definition see the following state diagram (figure below). The new password
is defined with command 3 and stored in the according 8-bit field in the SCUSLS register.
SCUSLC register is defined as follow
SCUSLC (F0C0
The command definition is described in Figure 118.
The security level status register SCUSLS is a read only register which shows the
current password, the actual security level and the state of the switching statemachine.
The SCUSLS is defined as followes:
Data Sheet
15
14
13
H
/ 60
12
H
)
11
10
H
ESFRReset Value: 0000
) or by patterns combined with an 8-bit password. For
9
COMMAND
8
rw
385
7
6
H
5
System Control Unit (CSCU)
4
3
2
2001-04-19
1
C161U
0