參數(shù)資料
型號： ST62T45BQ6
元件分類： 8位微控制器
英文描述： 8-BIT MICROCONTROLLER
中文描述： 8位微控制器
文件頁數(shù)： 12/74頁
文件大?。?/td> 733K
代理商： ST62T45BQ6
12/74
ST62T46B/E46B
MEMORY MAP
(Cont’d)
1.3.6 Data RAM/EEPROM Bank Register
(DRBR)
Address: CBh
—
Write only
Bit 7-5 = These bits are not used
Bit 4
-
DRBR4
. This bit, when set, selects RAM
Page 2.
Bit 3 -
DRBR3
. This bit, when set, selects RAM
Page 1.
Bit2. These bits are not used.
Bit 1 -
DRBR1
. This bit, when set, selects
EEPROM Page 1.
Bit 0 -
DRBR0
. This bit, when set, selects
EEPROM Page 0.
The selection of the bank is made by programming
the Data RAM Bank Switch register (DRBR regis-
ter) located at address CBh of the Data Space ac-
cording to Table 1. No more than one bank should
be set at a time.
The DRBR register can be addressed like a RAM
Data Space at the address CBh; nevertheless it is
a write only register that cannot be accessed with
single-bit operations. This register is used to select
the desired 64-byte RAM/EEPROM bank of the
Data Space. The number of banks has to be load-
ed in the DRBR register and the instruction has to
point to the selected location as if it was in bank 0
(from 00h address to 3Fh address).
This register is not cleared during the MCU initiali-
zation, therefore it must be written before the first
access to the Data Space bank region. Refer to
the Data Space description for additional informa-
tion. The DRBR register is not modified when an
interrupt or a subroutine occurs.
Notes
:
Care is required when handling the DRBR register
as it is write only. For this reason, it is not allowed
to change the DRBR contents while executing in-
terrupt service routine, as the service routine can-
not save and then restore its previous content. If it
is impossible to avoid the writing of this register in
interrupt service routine, an image of this register
must be saved in a RAM location, and each time
the program writes to DRBR it must write also to
the image register. The image register must be
written first, so if an interrupt occurs between the
two instructions the DRBR is not affected.
In DRBR Register, only 1 bit must be set. Other-
wise two or more pages are enabled in parallel,
producing errors.
Table 3. Data RAM Bank Register Set-up
7
0
-
-
-
DRBR4 DRBR3
-
DRBR1 DRBR0
DRBR
00h
01h
02h
08h
10h
other
ST62T46B/E46B
None
EEPROM Page 0
EEPROM Page 1
Not available
RAM Page 2
Reserved
相關(guān)PDF資料
PDF描述
ST6242B 8-BIT MICROCONTROLLER ( MCU ) WITH OTP. ROM. FASTROM. EPROM. LCD DRIVER. EEPROM. A/D CONVERTER AND 64 PINS
ST62E45BG1 8-BIT MICROCONTROLLER
ST62T40BQ6 8-BIT MICROCONTROLLER
ST62T42BQ6 8-BIT MICROCONTROLLER ( MCU ) WITH OTP. ROM. FASTROM. EPROM. LCD DRIVER. EEPROM. A/D CONVERTER AND 64 PINS
ST624XB-DBE REAL TIME EMULATION DEVELOPMENT TOOLS FOR ST6 MCU FAMILY
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST62T45Q6 制造商:STMicroelectronics 功能描述:8BIT MCU - Bulk
ST62T46BB6 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 安裝風格:SMD/SMT
ST62T52CB6 功能描述:8位微控制器 -MCU OTP EPROM 2K No Intf 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 安裝風格:SMD/SMT
ST62T52CM3 制造商:STMicroelectronics 功能描述: 制造商:STMicroelectronics 功能描述:MCU 8BIT ST6 CISC 1836BYTE EPROM 5V 16SOIC - Rail/Tube
ST62T52CM3/TR 制造商:STMicroelectronics 功能描述:125C, 2K OTP, ADC - Tape and Reel
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*