參數(shù)資料
型號: TS80C52X2ZZZ-LIE
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 30 MHz, MICROCONTROLLER, PQFP44
封裝: VQFP-44
文件頁數(shù): 17/46頁
文件大?。?/td> 7004K
代理商: TS80C52X2ZZZ-LIE
149
7593L–AVR–09/12
AT90USB64/128
The setup of the OC2x should be performed before setting the Data Direction Register for the
port pin to output. The easiest way of setting the OC2x value is to use the Force Output Com-
pare (FOC2x) strobe bit in Normal mode. The OC2x Register keeps its value even when
changing between Waveform Generation modes.
Be aware that the COM2x1:0 bits are not double buffered together with the compare value.
Changing the COM2x1:0 bits will take effect immediately.
16.5
Compare Match Output unit
The Compare Output mode (COM2x1:0) bits have two functions. The Waveform Generator uses
the COM2x1:0 bits for defining the Output Compare (OC2x) state at the next compare match.
Also, the COM2x1:0 bits control the OC2x pin output source. Figure 16-4 shows a simplified
schematic of the logic affected by the COM2x1:0 bit setting. The I/O Registers, I/O bits, and I/O
pins in the figure are shown in bold. Only the parts of the general I/O Port Control Registers
(DDR and PORT) that are affected by the COM2x1:0 bits are shown. When referring to the
OC2x state, the reference is for the internal OC2x Register, not the OC2x pin.
Figure 16-4. Compare Match Output unit, schematic.
The general I/O port function is overridden by the Output Compare (OC2x) from the Waveform
Generator if either of the COM2x1:0 bits are set. However, the OC2x pin direction (input or out-
put) is still controlled by the Data Direction Register (DDR) for the port pin. The Data Direction
Register bit for the OC2x pin (DDR_OC2x) must be set as output before the OC2x value is visi-
ble on the pin. The port override function is independent of the Waveform Generation mode.
The design of the Output Compare pin logic allows initialization of the OC2x state before the out-
put is enabled. Note that some COM2x1:0 bit settings are reserved for certain modes of
PORT
DDR
DQ
OCnx
pin
OCnx
DQ
Waveform
generator
COMnx1
COMnx0
0
1
D
ATA
B
U
S
FOCnx
clk
I/O
相關(guān)PDF資料
PDF描述
TS87C52X2-MIE 8-BIT, OTPROM, 40 MHz, MICROCONTROLLER, PQFP44
TS80C58X2XXX-VIA 8-BIT, MROM, 40 MHz, MICROCONTROLLER, PDIP40
TSC80C51CXXX-36CW 8-BIT, MROM, 36 MHz, MICROCONTROLLER, UUC40
TSC80C51TXXX-25IW 8-BIT, MROM, 25 MHz, MICROCONTROLLER, UUC40
TSC80C51TXXX-36IXD 8-BIT, MROM, 36 MHz, MICROCONTROLLER, UUC40
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TS80C52X2ZZZ-MCA 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller 8 Kbytes ROM/OTP, ROMless
TS80C52X2ZZZ-MCB 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller 8 Kbytes ROM/OTP, ROMless
TS80C52X2ZZZ-MCC 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller 8 Kbytes ROM/OTP, ROMless
TS80C52X2ZZZ-MCE 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller 8 Kbytes ROM/OTP, ROMless
TS80C52X2ZZZ-MIA 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller 8 Kbytes ROM/OTP, ROMless