saa-xc866 Infineon Technologies Corporation, saa-xc866 Datasheet - Page 59

• Manufacturer Part Number: saa-xc866
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Infineon Technologies Corporation

3.7.1
Table 18
types. A “ ” means that this function is reset to its default state.
Table 18
Module/
Function
CPU Core
Peripherals
On-Chip
Static RAM
Oscillator,
PLL
Port Pins
EVR
FLASH
NMI
3.7.2
When the SAA-XC866 is reset, it must identify the type of configuration with which to
start the different modes once the reset sequence is complete. Thus, boot configuration
information that is required for activation of special modes and conditions needs to be
applied by the external world through input pins. After power-on reset or hardware reset,
the pins MBC, TMS and P0.0 collectively select the different boot options.
shows the available boot options in the SAA-XC866.
Table 19
MBC
1)
2)
Data Sheet
1
0
0
1
The OCDS mode is not accessible if Flash is protected.
Normal user mode with standard JTAG (TCK,TDI,TDO) pins for hot-attach purpose.
TMS P0.0
0
0
1
1
shows how the functions of the SAA-XC866 are affected by the various reset
Module Reset Behavior
Booting Scheme
SAA-XC866 Boot Selection
Effect of Reset on Device Functions
Wake-Up
Reset
Not affected,
x
x
0
0
The voltage
switched on
regulator is
Disabled
reliable
Type of Mode
User Mode; on-chip OSC/PLL non-bypassed
BSL Mode; on-chip OSC/PLL non-bypassed
OCDS Mode
bypassed
Standalone User (JTAG) Mode
OSC/PLL non-bypassed (normal)
Watchdog
Reset
Not affected,
Not affected
Not affected
Disabled
reliable
1)
; on-chip OSC/PLL non-
55
Hardware
Reset
Not affected,
reliable
2)
; on-chip
Power-On
Reset
Affected, un-
reliable
Functional Description
PC Start Value
0000
0000
0000
0000
Brownout
Reset
Affected, un-
SAA-XC866
V1.2, 2008-02
reliable
H
H
H
H
Table 19