SAK-XC866L-2FRA BE Infineon Technologies, SAK-XC866L-2FRA BE Datasheet - Page 26
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SAK-XC866L-2FRA BE
Manufacturer Part Number
SAK-XC866L-2FRA BE
Description
IC MCU 8BIT FLASH 38-TSSOP
Manufacturer
Infineon Technologies
Series
XC8xxr
Datasheet
1.SAF-XC866-2FRI_BC.pdf
(116 pages)
Specifications of SAK-XC866L-2FRA BE
Core Processor
XC800
Core Size
8-Bit
Speed
86MHz
Connectivity
LIN, SSI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
19
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
38-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
SP000245768
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In order to access a register located in a page different from the actual one, the current
page must be left. This is done by reprogramming the bit field PAGE in the page register.
Only then can the desired access be performed.
If an interrupt routine is initiated between the page register access and the module
register access, and the interrupt needs to access a register located in another page, the
current page setting can be saved, the new one programmed and finally, the old page
setting restored. This is possible with the storage fields STx (x = 0 - 3) for the save and
restore action of the current page setting. By indicating which storage bit field should be
used in parallel with the new page value, a single write operation can:
• Save the contents of PAGE in STx before overwriting with the new value
• Overwrite the contents of PAGE with the contents of STx, ignoring the value written to
Figure 10
With this mechanism, a certain number of interrupt routines (or other routines) can
perform page changes without reading and storing the previously used page information.
The use of only write operations makes the system simpler and faster. Consequently,
this mechanism significantly improves the performance of short interrupt routines.
The XC866 supports local address extension for:
• Parallel Ports
• Analog-to-Digital Converter (ADC)
• Capture/Compare Unit 6 (CCU6)
• System Control Registers
Data Sheet
(this is done in the beginning of the interrupt routine to save the current page setting
and program the new page number); or
the bit positions of PAGE
(this is done at the end of the interrupt routine to restore the previous page setting
before the interrupt occurred)
Storage Elements for Paging
value update
from CPU
STNR
22
PAGE
ST3
ST2
ST1
ST0
Functional Description
V1.2, 2007-10
XC866
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