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| 型號： | ST62T60C |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, SAFE RESET, AUTO-RELOAD TIMER, EEPROM AND SPI |
| 中文描述： | 8位檢察官辦公室/存儲器與阿微控制器/ D轉(zhuǎn)換器，安全復(fù)位，自動重加載定時器，EEPROM和的SPI |
| 文件頁數(shù)： | 32/86頁 |
| 文件大?。?/td> | 559K |
| 代理商： | ST62T60C |
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ST62T53C/T60C/T63C ST62E60C
INTERRUPTS
(Cont’d)
3.4.2 Interrupt Procedure
The interrupt procedure is very similar to a callpro-
cedure, indeed the user can consider the interrupt
as an asynchronous call procedure. As this is an
asynchronous event, the user cannot know the
context and the time at which it occurred. As a re-
sult, the user should save all Data space registers
which may be used within the interrupt routines.
There are separate setsof processor flags for nor-
mal, interrupt and non-maskable interrupt modes,
which are automatically switched and so do not
need to be saved.
The following list summarizes the interrupt proce-
dure:
MCU
– The interrupt is detected.
– The C and Z flags are replaced by the interrupt
flags (or by the NMI flags).
– The PC contents are stored in the first level of
the stack.
– The normalinterrupt lines are inhibited (NMI still
active).
– The first internal latch is cleared.
– TheassociatedinterruptvectorisloadedinthePC.
WARNING:
In some circumstances, when a
maskable interrupt occurs while the ST6 core is in
NORMAL mode and especially during the execu-
tion of an ”ldi IOR, 00h” instruction (disabling all
maskable interrupts): if the interrupt arrives during
the first 3 cycles of the ”ldi” instruction (which is a
4-cycle instruction) the core will switch to interrupt
mode BUT the flags CN and ZN will NOT switch to
the interrupt pair CI and ZI.
User
– User selected registers are saved within the in-
terrupt service routine (normally on a software
stack).
– Thesource ofthe interruptis found bypolling the
interrupt flags (if more than one source is associ-
ated with the same vector).
– The interrupt is serviced.
– Return from interrupt (RETI)
MCU
– Automatically theMCU switches back to the nor-
mal flag set (or the interrupt flag set) and pops
the previous PC value from the stack.
The interrupt routine usually begins by the identify-
ing the device which generated the interrupt re-
quest (by polling). The user should save the regis-
ters which are usedwithin theinterrupt routine in a
software stack. After the RETI instruction is exe-
cuted, the MCU returns to the main routine.
Figure 21. Interrupt Processing Flow Chart
INSTRUCTION
FETCH
INSTRUCTION
EXECUTE
INSTRUCTION
THE IWAS
A RETI
CLEAR
INTERRUPT MASK
SELECT
PROGRAM FLAGS
”POP”
THE STACKED PC
CHECK IF THERE IS
AN INTERRUPT REQUEST
AND INTERRUPTMASK
SELECT
INTERNALMODE FLAG
PUSH THE
PC INTO THE STACK
LOAD PC FROM
INTERRUPT VECTOR
(FFC/FFD)
SET
INTERRUPT MASK
NO
NO
YES
IS THE CORE
NALREADY IN
VA000014
YES
NO
YES
相關(guān)PDF資料 |
PDF描述 |
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| ST62T63C | 8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, SAFE RESET, AUTO-RELOAD TIMER, EEPROM AND SPI |
| ST63E69 | 8-Bit EPROM HCMOS MCUs For Digital Controlled Multi Frequency Monitor(應(yīng)用于數(shù)字控制的多頻顯示器的8位EPROM HCMOS微控制器) |
| ST63T69 | 8-Bit EPROM HCMOS MCUs For Digital Controlled Multi Frequency Monitor(應(yīng)用于數(shù)字控制的多頻顯示器的8位EPROM HCMOS微控制器) |
| ST63E85 | 8-Bit EPROM/OTP MCUs With On-Screen-Display For TV Tuning(應(yīng)用于電視調(diào)諧帶屏幕顯示的8位EPROM/OTP微控制器) |
| ST63E87 | 8-Bit EPROM/OTP MCUs With On-Screen-Display For TV Tuning(應(yīng)用于電視調(diào)諧帶屏幕顯示的8位EPROM/OTP微控制器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST62T60CB6 | 功能描述:8位微控制器 -MCU OTP EPROM 4K SPI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| ST62T60CB6 | 制造商:STMicroelectronics 功能描述:8BIT MCU OTP 4K+EEPROM 62T60 DIP |
| ST62T60CM3 | 制造商:STMicroelectronics 功能描述:MCU 8BIT ST6 CISC 3884BYTE EPROM 5V 20SOIC - Rail/Tube |
| ST62T60CM6 | 功能描述:8位微控制器 -MCU OTP EPROM 4K SPI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| ST62T60CM6/TR | 制造商:STMicroelectronics 功能描述: 制造商:STMicroelectronics 功能描述:ST62T60CM6/TR - Tape and Reel |
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