參數(shù)資料
型號: TS87C58X2-VIA
廠商: Atmel
文件頁數(shù): 7/62頁
文件大?。?/td> 0K
描述: IC MCU 8BIT 32K OTP 40MHZ 40-DIP
標準包裝: 216
系列: 87C
核心處理器: 8051
芯體尺寸: 8-位
速度: 40/30MHz
連通性: UART/USART
外圍設備: POR,WDT
輸入/輸出數(shù): 32
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: OTP
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 40-DIP(0.600",15.24mm)
包裝: 管件
15
4431E–8051–04/06
AT/TS8xC54/8X2
Figure 8-1.
Auto-Reload Mode Up/Down Counter (DCEN = 1)
8.1.1
Programmable Clock-Output
In the clock-out mode, timer 2 operates as a 50%-duty-cycle, programmable clock generator
(See Figure 8-2) . The input clock increments TL2 at frequency F
OSC/2. The timer repeatedly
counts to overflow from a loaded value. At overflow, the contents of RCAP2H and RCAP2L reg-
isters are loaded into TH2 and TL2. In this mode, timer 2 overflows do not generate interrupts.
The formula gives the clock-out frequency as a function of the system oscillator frequency and
the value in the RCAP2H and RCAP2L registers :
For a 16 MHz system clock, timer 2 has a programmable frequency range of 61 Hz
(F
OSC/2
16) to 4 MHz (F
OSC/4). The generated clock signal is brought out to T2 pin (P1.0).
Timer 2 is programmed for the clock-out mode as follows:
Set T2OE bit in T2MOD register.
Clear C/T2 bit in T2CON register.
Determine the 16-bit reload value from the formula and enter it in RCAP2H/RCAP2L
registers.
(DOWN COUNTING RELOAD VALUE)
C/T2
TF2
TR2
T2
EXF2
TH2
(8-bit)
TL2
(8-bit)
RCAP2H
(8-bit)
RCAP2L
(8-bit)
FFh
(8-bit)
FFh
(8-bit)
T OG-
(UP COUNTING RELOAD VALUE)
TIMER 2
INTERRUPT
XTAL1
:12
F
OSC
FXTAL
0
1
T2CONreg
T2EX:
if DCEN=1, 1=UP
if DCEN=1, 0=DOWN
(:6 in X2 mode)
Clock OutFrequency
Fosc
4
65536
RCAP2H
RCAP2L
()
×
-----------------------------------------------------------------------------------------
=
相關PDF資料
PDF描述
TS87C51RC2-MIA IC MCU 8BIT 32K OTP 40MHZ 40-DIP
TS87C51RC2-MCA IC MCU 8BIT 32K OTP 40MHZ 40-DIP
TS80C51RD2-VIA IC MCU 8BIT 768BYTE 40MHZ 40-DIP
TS87C54X2-MCA IC MCU 8BIT 16K OTP 40MHZ 40-DIP
TS87C51RB2-LCA IC MCU 8BIT 16K OTP 30MHZ 40-DIP
相關代理商/技術參數(shù)
參數(shù)描述
TS87C58X2-VIAD 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MICROCONTROLLER|8-BIT|8051 CPU|CMOS|DIP|40PIN|PLASTIC
TS87C58X2-VIB 功能描述:IC MCU 8BIT 32K OTP 40MHZ 44PLCC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:87C 標準包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C,LIN,SPI,UART/USART,USI 外圍設備:欠壓檢測/復位,POR,PWM,溫度傳感器,WDT 輸入/輸出數(shù):16 程序存儲器容量:8KB(4K x 16) 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉換器:A/D 11x10b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC(0.295",7.50mm 寬) 包裝:帶卷 (TR)
TS87C58X2-VIBB 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MICROCONTROLLER|8-BIT|8051 CPU|CMOS|LDCC|44PIN|PLASTIC
TS87C58X2-VIBD 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MICROCONTROLLER|8-BIT|8051 CPU|CMOS|LDCC|44PIN|PLASTIC
TS87C58X2-VIBR 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MICROCONTROLLER|8-BIT|8051 CPU|CMOS|LDCC|44PIN|PLASTIC