- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄365975 > TSC87C52-16IJD CMOS 0 to 33 MHz Programmable 8朾it Microcontroller PDF資料下載
參數(shù)資料
| 型號： | TSC87C52-16IJD |
| 英文描述： | CMOS 0 to 33 MHz Programmable 8朾it Microcontroller |
| 中文描述： | 的CMOS 0至33 MHz的可編程微控制器8朾它 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大小： | 273K |
| 代理商： | TSC87C52-16IJD |
TSC87C52
7
MATRA MHS
Rev. C – 10 Sept 1997
Preliminary
While the TSC87C52 is in ONCE mode, an emulator or test CPU can be used to drive the circuit. Table 2 shows the
status of the port pins during ONCE mode.
Normal operation is restored when normal reset is applied.
Table 2 External pin status during ONCE mode
ALE
PSEN
Port 0
Port 1
Port 2
Port 3
XTAL1/2
Weak pull–up
Weak pull–up
Float
Weak pull–up
Weak pull–up
Weak pull–up
Active
ALE Disabling
The ALE signal is used to demultiplex address and data buses on port 0 when used with external program or data
memory. Nevertheless, during internal code execution, ALE signal is still generated. In order to reduce EMI, ALE
signal should be disabled by setting AO bit.
The AO bit is located in MSCON at bit location 0 (see Table 3). As soon as AO is set, ALE is no longer output but
remains active during MOVX and MOVC instructions and external fetches. During ALE disabling, ALE pin is weakly
pulled high.
Table 3 MSCON – Miscellaneous Control Register (8Eh)
7
6
5
4
3
2
1
0
–
–
–
–
–
–
–
AO
Symbol
Description
–
Reserved
Do not write 1 in these bits.
AO
ALE Output bit
Set to disable ALE operation during internal fetches.
Clear to restore ALE operation during internal fetches.
The reset value of MSCON is XXXX XXX0b.
UART
The UART in the TSC87C52 operates identically to the UART in the 80C51 but includes the following enhancement.
For a complete understanding of the TSC87C52 UART please refer to the description in the 80C51 Hardware
Description Guide.
Framing Error Detection
Framing error detection allows the serial port to check for missing stop bits in the communication in mode 1, 2 or 3.
A missing stop bit can be caused for example by noise on the serial lines or transmission by two CPUs simultaneously.
If a stop bit is missing a Framing Error bit (FE) is set. The FE bit can be checked in software after each reception to
detect communication errors. Once set, the FE bit must be cleared in software. A valid stop bit will not clear FE.
The FE bit is located in SCON at bit location 7. It shares the same bit location as SM0 (see Table 4). The new control
bit SMOD0 in PCON (see Table 1) determines whether the SM0 or FE bit is accessed (see Figure 3), so whether the
framing error detection is enabled or not. If SMOD0 is set then SCON.7 functions as FE, if SMOD0 is cleared then
SCON.7 functions as SM0. Once set, the FE bit must be cleared by software. A valid stop bit will not clear FE. When
UART is in mode 1 (8–bit mode), RI flag is set during stop bit whether or not framing error is enabled (see Figure 4).
相關PDF資料 |
PDF描述 |
|---|---|
| TSC87C52-16IJR | CMOS 0 to 33 MHz Programmable 8朾it Microcontroller |
| TSC87C52-16IKB | CMOS 0 to 33 MHz Programmable 8朾it Microcontroller |
| TSC87C52-16IKD | CMOS 0 to 33 MHz Programmable 8朾it Microcontroller |
| TSC87C52-16IKR | CMOS 0 to 33 MHz Programmable 8朾it Microcontroller |
| TSC87C52-20CAB | CMOS 0 to 33 MHz Programmable 8朾it Microcontroller |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TSC888AILT | 功能描述:電流靈敏放大器 Sense Amplifier 20 Gain RoHS:否 制造商:Texas Instruments 通道數(shù)量: 共模抑制比（最小值）:110 dB 輸入補償電壓:80 uV 電源電壓-最大:5.5 V 電源電壓-最小:2.7 V 電源電流:350 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel |
| TSC888BILT | 功能描述:電流靈敏放大器 Sense Amplifier 50 Gain RoHS:否 制造商:Texas Instruments 通道數(shù)量: 共模抑制比（最小值）:110 dB 輸入補償電壓:80 uV 電源電壓-最大:5.5 V 電源電壓-最小:2.7 V 電源電流:350 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel |
| TSC888CILT | 功能描述:電流靈敏放大器 Sense Amplifier 100 Gain RoHS:否 制造商:Texas Instruments 通道數(shù)量: 共模抑制比（最小值）:110 dB 輸入補償電壓:80 uV 電源電壓-最大:5.5 V 電源電壓-最小:2.7 V 電源電流:350 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel |
| TSC9 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EURO TERMINAL BLOCKS |
| TSC903 | 制造商:Laird Technologies Inc 功能描述:CLIP TO-3P 制造商:Laird Technologies Inc 功能描述:CLIP, TO-3P 制造商:Laird Technologies Inc 功能描述:CLIP, TO-3P; External Width:6.5mm; SVHC:No SVHC (18-Jun-2012); Isolation Voltage:1kV; Length:30mm; Material:Steel; Package / Case:TO-3P, TO-218, TO-247; Packages Cooled:TO-3P, TO-218, TO-247; Pad Thickness Max:0.5mm; Panel Thickness ;RoHS Compliant: Yes 制造商:Laird Technologies Inc 功能描述:CLIP, TO-3P; External Width:6.5mm; SVHC:No SVHC (18-Jun-2012); Isolation Voltage:1kV; Length:30mm; Material:Steel; Package / Case:TO-3P, TO-218, TO-247; Packages Cooled:TO-218, TO-247, TO-3P; Pad Thickness Max:0.5mm; Panel Thickness ;RoHS Compliant: Yes |
發(fā)布緊急采購，3分鐘左右您將得到回復。