- 您现在的位置：买卖IC网 > PDF目录67969 > SJ80C52XXX-12SC (ATMEL CORP) 8-BIT, MROM, 12 MHz, MICROCONTROLLER, CQCC44 PDF资料下载
参数资料
| 型号： | SJ80C52XXX-12SC |
| 厂商： | ATMEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, CQCC44 |
| 封装： | JLCC-44 |
| 文件页数： | 20/20页 |
| 文件大小： | 194K |
| 代理商： | SJ80C52XXX-12SC |
80C32/80C52/80C32E
9
Rev. J
– July 03, 2000
Figure 6. External Drive Configuration
6. Hardware Description
Same as for the 80C51, plus a third timer/counter.
6.1. Timer/Event Counter 2
Timer 2 is a 16 bit timer/counter like Timers 0 and 1, it can operate either as a timer or as an event counter. This is
selected by bit C/T2 in the Special Function Register T2CON (Figure 1.). It has three operating modes : “capture”,
“autoload” and “baud rate generator”, which are selected by bits in T2CON as shown in Table 2.
In the capture mode there are two options which are selected by bit EXEN2 in T2CON; If EXEN2 = 0, then Timer 2
is a 16 bit timer or counter which upon overflowing sets bit TF2, the Timer 2 overflow bit, which can be used to generate
an interrupt. If EXEN2 = 1, then Timer 2 still does the above, but with the added feature that a 1-to-0 transition at
external input T2EX causes the current value in the Timer 2 registers, TL2 and TH2, to be captured into registers
RCAP2L and RCAP2H, respectively, (RCAP2L and RCAP2H are new Special Function Register in the 80C52). In
addition, the transition at T2EX causes bit EXF2 in T2CON to be set, and EXF2, like TF2, can generate an interrupt.
Table 2. Timer 2 Operating Modes
RCLK +
TCLK
CP/RL2
TR2
MODE
0
1
X
0
1
X
1
0
16 bit auto-reload
16 bit capture
baud rate generator
(off)
The capture mode is illustrated in Figure 7.
相关PDF资料 |
PDF描述 |
|---|---|
| SD80C52XXX-12SV | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, CDIP40 |
| SC80C32XXX-12SB | 8-BIT, 12 MHz, MICROCONTROLLER, CDIP40 |
| SC80C32XXX-36SC | 8-BIT, 36 MHz, MICROCONTROLLER, CDIP40 |
| SD80C52XXX-36 | 8-BIT, MROM, 36 MHz, MICROCONTROLLER, CDIP40 |
| SD80C52XXX-36/883 | 8-BIT, MROM, 36 MHz, MICROCONTROLLER, CDIP40 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SJ81200 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SJ83100 | 制造商:ON Semiconductor 功能描述:SJ83100 - Trays 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SJ83180 | 制造商:ON Semiconductor 功能描述:NPN TO-3 METAL PWR TRANSISTOR - Trays 制造商:Rochester Electronics LLC 功能描述:NPN TO-3 METAL PWR TRANSISTOR - Bulk |
| SJ84140 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SJ-870 | 制造商:NEL 制造商全称:Nel Frequency Controls,inc 功能描述:CRYSTAL CLOCK OSCILLATORS |
发布紧急采购，3分钟左右您将得到回复。