參數(shù)資料
型號(hào)： TMP96C141AF
廠商： Toshiba Corporation
英文描述： High Speed Advanced CMOS 16-bit Microcontroller For Controlling Medium to Large-Scale Equipment(用于中等到大型設(shè)備控制，高速、先進(jìn)的 CMOS 16位微控制器)
中文描述： 采用先進(jìn)的CMOS高速16位微控制器控制中的大型設(shè)備（用于中等到大型設(shè)備控制，高速，先進(jìn)的的CMOS 16位微控制器）
文件頁(yè)數(shù)： 48/178頁(yè)
文件大?。?/td> 5667K
代理商： TMP96C141AF
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48
TOSHIBA CORPORATION
TMP96C141AF
3.6 Chip Select/Wait Control
TMP96C141AF has a built-in chip select/wait controller used
to control chip select (CS0 - CS2 pins), wait (WAIT pin), and
data bus size (8 or 16 bits) for any of the three block address
areas.
3.6.1 Control Registers
Table 3.6 (1) shows control registers
One block address areas are controlled by 1-byte CS/
WAIT control registers (B0CS, B1CS, and B2CS). Registers
can be written to only when the CPU is in system mode. (There
are two CPU modes: system and normal.) The reason is that
the settings of these registers have an important effect on the
system.
(1)
Enable
Control register bit 7 (B0E, B1E, and B2E) is a master
bit used to specify enable (1)/disable (0) of the setting.
Resetting B0E and B1E to disable (0) and B2E to
enable (1).
(2) System only specification
Control register bit 6 (B0SYS, B1SYS, and B2SYS) is
used to specify enable/disable of the setting depend-
ing on the CPU operating mode (system or normal).
Setting this bit to 0 enables setting (Address space for
CS, Wait state, Bus size, etc.) regardless of the CPU
operating mode; setting it to 1 enables setting in sys-
tem mode but disables setting in normal mode.
Resetting clears bit 6 to 0.
Bit 6 is mainly used when external memory data should
not be accessed in normal mode (i.e., for system mode
only memory data for the operating system).
(3)
CS/CAS Waveform select
Control register bit 5 (B0CAS, B1CAS, and B2CAS) is
used to specify waveform mode output from the chip
select pin (CS0/CAS0 - CS2/CAS2). Setting this bit to
0 specifies CS0 to CS2 waveforms; setting it to 1
specifies CAS0 to CAS2 waveforms.
Resetting clears bit 5 to 0.
(4)
Data bus size select
Bit 4 (B0BUS, B1BUS, and B2BUS) of the control reg-
ister is used to specify data bus size. Setting this bit to
0 accesses the memory in 16-bit data bus mode; set-
ting it to 1 accesses the memory in 8-bit data bus
mode.
Changing data bus size depending on the access
address is called dynamic bus sizing. Table 3.6 (2)
shows the details of the bus operation.
(5)
Wait control
Control register bits 3 and 2 (B0W1, 0; B1W1, 0; B2W1,
0) are used to specify the number of waits. Setting these
bits to 00 inserts a 2-state wait regardless of the WAIT
pin status. Setting them to 01 inserts a 1-state wait
regardless of the WAIT status. Setting them to 10
inserts a 1-state wait and samples the WAIT pin status.
If the pin is low, inserting the wait maintains the bus
cycle until the pin goes high. Setting them to 11 com-
pletes the bus cycle without a wait regardless of the
WAIT pin status.
Resetting sets these bits to 00 (2-state wait mode).
(6)
Address area specification
Control register bits 1 and 0 (B0C1, 0; B1C1, 0; B2C1,
0) are used to specify the target address area. Setting
these bits to 00 enables settings (CS output, Wait
state, Bus size, etc.) as follows:
* CS0 setting enabled when 7F00H to 7FFFH is
accessed.
* CS1 setting enabled when 480H to 7FFFH is
accessed.
* CS2 setting enabled when 8000H to 3FFFFFFH is
accessed, for the TMP96C141, which does not have a
built-in ROM.
CS2 setting enabled when 10000H to 3FFFFFH is
accessed for the TMP96CM40/TMP96PM40, which
has built-in
ROM/PROM
Setting bits to 01 enables setting for all CS’s blocks
and outputs a low strobe signal (CS0/CAS0 ~ CS2/
CAS2) from chip select pins when 400000H to
7FFFFFH is accessed. Setting bits to 10 enables them
800000H to BFFFFFH is accessed. Setting bits to 11
enables them when C00000H to FFFFFFH is
accessed.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TMP96C141BF 功能描述:16位微控制器 - MCU ROMLESS TLCS 900 w/ 1K RAM RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
TMP96C141BFG 功能描述:16位微控制器 - MCU 900 Romless MCU 1K RAM RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
TMP96CM40F 制造商:Toshiba America Electronic Components 功能描述:TLCS900 M/ROM, 32K ROM , 1K RAM - Tape and Reel
TMP96PM40F 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Quality And Reliability Assurance / Handling Precautions
TMP96PM40F(Z) 功能描述:16位微控制器 - MCU 32K ROM OTP 1K RAM RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
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