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参数资料
| 型号： | AT89LS53 |
| 厂商： | Atmel Corp. |
| 英文描述： | 8-Bit Microcontroller with 12K Bytes Flash(宽电压范围、带12K字节闪速存储器的8位微控制器) |
| 中文描述： | 8位和第12K字节的闪存（宽电压范围，带1.2万字节闪速存储器的单片机的8位微控制器） |
| 文件页数： | 14/31页 |
| 文件大小： | 346K |
| 代理商： | AT89LS53 |
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AT89LS53
4-262
Programmable Clock Out
A 50% duty cycle clock can be programmed to come out on
P1.0, as shown in Figure 5. This pin, besides being a regu-
lar I/0 pin, has two alternate functions. It can be pro-
grammed to input the external clock for Timer/Counter 2 or
to output a 50% duty cycle clock ranging from 61 Hz to 3
MHz at a 12 MHz operating frequency.
To configure the Timer/Counter 2 as a clock generator, bit
C/T2 (T2CON.1) must be cleared and bit T2OE (T2MOD.1)
must be set. Bit TR2 (T2CON.2) starts and stops the timer.
The clock-out frequency depends on the oscillator fre-
quency and the reload value of Timer 2 capture registers
(RCAP2H, RCAP2L), as shown in the following equation.
In the clock-out mode, Timer 2 rollovers will not generate
an interrupt. This behavior is similar to when Timer 2 is
used as a baud-rate generator. It is possible to use Timer 2
as a baud-rate generator and a clock generator simulta-
neously. Note, however, that the baud-rate and clock-out
frequencies cannot be determined independently from one
another since they both use RCAP2H and RCAP2L.
UART
The UART in the AT89LS53 operates the same way as the
UART in the AT89C51, AT89C52 and AT89C55. For fur-
ther information, see the October 1995 Atmel Microcontrol-
ler Data Book, page 2-49, section titled, “Serial Interface.”
Serial Peripheral Interface
The serial peripheral interface (SPI) allows high-speed syn-
chronous data transfer between the AT89LS53 and periph-
eral devices or between several AT89LS53 devices. The
AT89LS53 SPI features include the following:
Full-Duplex, 3-Wire Synchronous Data Transfer
Master or Slave Operation
1.5-MHz Bit Frequency (max.)
LSB First or MSB First Data Transfer
Four Programmable Bit Rates
End of Transmission Interrupt Flag
Write Collision Flag Protection
Wakeup from Idle Mode (Slave Mode Only)
Clock-Out Frequency
65536
RCAP2H,RCAP2L
(
–
4
)
[
]
×
------------------------------------------------------------------------------------------
=
Figure 6.
SPI Block Diagram
OSCILLATOR
8/16-BIT SHIFT REGISTER
READ DATA BUFFER
P
SPI CONTROL
SPI STATUS REGISTER
SPI INTERRUPT
REQUEST
INTERNAL
DATA BUS
SELECT
SPI CLOCK (MASTER)
DIVIDER
÷4÷16÷64÷128
SPI CONTROL REGISTER
8
8
8
S
W
S
MSTR
SPE
S
CLOCK
LOGIC
CLOCK
MSB
S
M
S
D
M
C
C
S
S
M
S
D
LSB
S
M
M
S
MISO
P1.6
MOSI
P1.5
SCK
1.7
SS
P1.4
S
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PDF描述 |
|---|---|
| AT89LS8252 | 8-Bit Microcontroller with 8K Bytes Flash |
| AT89LS8252-12AC | 8-Bit Microcontroller with 8K Bytes Flash |
| AT89LS8252-12AI | 8-Bit Microcontroller with 8K Bytes Flash |
| AT89LS8252-12JC | 8-Bit Microcontroller with 8K Bytes Flash |
| AT89LS8252-12JI | 8-Bit Microcontroller with 8K Bytes Flash |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT89LS53-12AC | 功能描述:8位微控制器 -MCU Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| AT89LS53-12AI | 功能描述:8位微控制器 -MCU Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| AT89LS53-12JC | 功能描述:8位微控制器 -MCU Low V w/12k RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| AT89LS53-12JI | 功能描述:8位微控制器 -MCU Low V w/12k RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| AT89LS53-12PC | 功能描述:8位微控制器 -MCU Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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