- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98146 > ST7260E2M1/XXX (STMICROELECTRONICS) 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO24 PDF資料下載
參數(shù)資料
| 型號(hào)： | ST7260E2M1/XXX |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO24 |
| 封裝： | 0.300 INCH, LEAD FREE, PLASTIC, SOP-24 |
| 文件頁(yè)數(shù)： | 18/118頁(yè) |
| 文件大?。?/td> | 2304K |
| 代理商： | ST7260E2M1/XXX |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)當(dāng)前第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)
ST7260
114/117
16 KNOWN LIMITATIONS
16.1 PA2 LIMITATION WITH OCMP1 ENABLED
Description
This limitation affects only Rev B Flash devices
(with Internal Sales Type 72F60xxxxx$x7); it has
been corrected in Rev W Flash devices (with Inter-
nal Sales Type 72F60xxxxx$x9).
Note: Refer to Figure 68 on page 115
When Output Compare 1 function (OCMP1) on pin
PA6 is enabled by setting the OC1E bit in the
TCR2 register, pin PA2 is also affected.
In particular, the PA2 pin is forced to be floating
even if port configuration (PADDR+PADR) has set
it as output low. However, it can be still used as an
input.
16.2 UNEXPECTED RESET FETCH
If an interrupt request occurs while a "POP CC" in-
struction is executed, the interrupt controller does
not recognise the source of the interrupt and, by
default, passes the RESET vector address to the
CPU.
Workaround
To solve this issue, a "POP CC" instruction must
always be preceded by a "SIM" instruction.
16.3 SCI WRONG BREAK DURATION
Description
A single break character is sent by setting and re-
setting the SBK bit in the SCICR2 register. In
some cases, the break character may have a long-
er duration than expected:
- 20 bits instead of 10 bits if M=0
- 22 bits instead of 11 bits if M=1.
In the same way, as long as the SBK bit is set,
break characters are sent to the TDO pin. This
may lead to generate one break more than expect-
ed.
Occurrence
The occurrence of the problem is random and pro-
portional to the baudrate. With a transmit frequen-
cy
of
19200
baud
(fCPU=8MHz
and
SCI-
BRR=0xC9), the wrong break duration occurrence
is around 1%.
Workaround
If this wrong duration is not compliant with the
communication protocol in the application, soft-
ware can request that an Idle line be generated
before the break character. In this case, the break
duration is always correct assuming the applica-
tion is not doing anything between the idle and the
break. This can be ensured by temporarily disa-
bling interrupts.
The exact sequence is:
- Disable interrupts
- Reset and Set TE (IDLE request)
- Set and Reset SBK (Break Request)
- Re-enable interrupts
16.4 USB Behavior with LVD Disabled
On ROM devices, if the LVD is disabled, the USB
is disabled by hardware. So, the LVD is forced by
ST to 0 (LVD enabled). Refer to the ST7260 option
list for details.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST72T141K2M6XXX | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDSO34 |
| ST72T141K2M3XXX | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDSO34 |
| ST72T141K2MARE | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDSO34 |
| ST7FL09Y0MATRE | 8-BIT, FLASH, 16 MHz, MICROCONTROLLER, PDSO16 |
| ST7FL09Y0MBE | 8-BIT, FLASH, 16 MHz, MICROCONTROLLER, PDSO16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST72611F1 | 制造商:STMicroelectronics 功能描述:LOW SPEED USB 8-BIT MCU WITH 3 ENDPOINTS,FLASH MEMORY, - Bulk |
| ST7263-EMU2 | 功能描述:仿真器/模擬器 ST7 Emulator Board RoHS:否 制造商:Blackhawk 產(chǎn)品:System Trace Emulators 工具用于評(píng)估:C6000, C5000, C2000, OMAP, DAVINCI, SITARA, TMS470, TMS570, ARM 7/9, ARM Cortex A8/R4/M3 用于:XDS560v2 |
| ST7265X-EVAL/MS | 制造商:STMicroelectronics 功能描述:ST6 EVAL BD - Bulk |
| ST7265X-EVAL/PFD | 制造商:STMicroelectronics 功能描述:USB FLASH EVAL - Bulk |
| ST7266 | 制造商:6940 功能描述:ST7266 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。