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參數(shù)資料
| 型號： | ST623x-EMU2 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Real Time Emulation Development Tools for ST6218/ST6228/ST623x MCUs(ST6218/6228/623x的實時開發(fā)工具) |
| 中文描述： | 實時仿真開發(fā)工具ST6218/ST6228/ST623x微控制器（ST6218/6228/623x的實時開發(fā)工具） |
| 文件頁數(shù)： | 19/20頁 |
| 文件大?。?/td> | 236K |
| 代理商： | ST623X-EMU2 |
19/20
ST623x-EMU2 - TROUBLESHOOTING
– The Data RAM/EEPROM Banking Register
– The Data ROM window Register
To offer more flexibility to the user, all ofthese reg-
isters are readable outside of real time.(undefined
bits are read as ”0” value).
5.5 AVOID THE MOST FREQUENT PROBLEMS
WHEN PROGRAMMING ST6 MICROS!
5.5.1 Execution of Interrupt
If interrupt are not executed,
comes from:
– The core is not in normal mode: after RESET the
core is in NMI mode, to enter the normal mode
which let execute interrupt, the core must exe-
cute a RETI instruction.
– The globalenable interrupt bit has not beenSET,
or hasbeen unintentionally cleared, then theIOR
register must be checked. The default value to
enable Interrupts is 010H.
in most cases, it
– The enable interrupt bit of the desired peripheral
has not been SET, or has been unintentionally
cleared.
– The Interrupt Option Register is write only, and
has been wrongly written by a read/modify/write
instruction, only LDI is permitted.
5.5.2 Execution of WAIT and STOPinstructions
In WAITmode, led WAIT is ON, in STOPmode the
2 led WAIT and STOP are ON (on the front panel
of the emulator).
If STOP or WAIT instructions are not exited, it
comes from:
– The coreis notin normal mode: after RESET the
core is in NMI mode, to enter the normal mode
which let execute interrupt to exit from these
states, the core must execute a RETI instruction.
Explanation: the only way to go out of STOP or
WAIT state is to have an INTERRUPT or a RE-
SET, it is the reason why, to execute these instruc-
tions the interrupt must have been validated.
19
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