參數(shù)資料
型號: T48C893-TKQ
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: The multiple times programmable (MTP) version for the MARC4 ROM types
中文描述: 4-BIT, FLASH, 4 MHz, MICROCONTROLLER, PDSO20
封裝: SSO-20
文件頁數(shù): 27/82頁
文件大?。?/td> 638K
代理商: T48C893-TKQ
T48C893
Rev. A4, 22-Jan-02
27 (82)
4.2.4
The bidirectional Port 4 is both a bitwise configurable I/O
port and provides the external pins for the Timer 2, SSI
and the voltage monitor input (VMI). As a normal port,
it performs in exactly the same way as bidirectional Port 2
(see figure 26). Two additional multiplexes allow data
and port direction control to be passed over to other inter-
nal modules (Timer 2, VM or SSI). The I/O-pins for SC
Bidirectional Port 4
and SD line have an additional mode to generate an SSI
interrupt.
All four Port 4 pins can be individually switched by the
P4CR
register . Figure 26 shows the internal interfaces to
bidirectional Port 4.
Master reset
Q
VDD
VDD
BPxy
Mask options
*
*
PxDATy
S
I/O Bus
D
I/O Bus
I/O Bus
*
*
Switched
pull-up
Switched
pull-down
PxCRy
SQ
D
PxMRy
POut
(Direction)
PDir
Intx
*
*
PIn
VDD
Static
Pull-up
Static
Pull-down
Figure 26. Bidirectional Port 4 and Port 6
Port 4 Data Register (P4DAT)
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
Bit 3
P4DAT3
Bit 2
P4DAT2
Bit 1
P4DAT1
Bit 0
P4DAT0
Reset value: 1111b
P4DAT
Port 4 Control Register (P4CR) Byte Write
Auxiliary register address:
4
hex
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
P4xM2, P4xM1
Port 4x Interrupt mode/direction code
相關(guān)PDF資料
PDF描述
T500 DIL 14 PIN SINGLE OUTPUT
T500 Phase Control SCR (40-80 Amperes (63-125 RMS) 1600 Volts)
T5015 TELECOMMUNICATIONS PRODUCTS
T5002 TELECOMMUNICATIONS PRODUCTS
T5003 TELECOMMUNICATIONS PRODUCTS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
T48D 制造商:WELWYN 制造商全稱:Welwyn Components Limited 功能描述:High Voltage Precision Thick Film Resistors
T48DH-100MFI 制造商:TT Electronics / Welwyn 功能描述:RESISTOR 100 MEG OHM 1%
T48DH-150MFI 制造商:TT Electronics / Welwyn 功能描述:RESISTOR 150 MEG OHM 1%
T48DH-220MFI 制造商:TT Electronics / Welwyn 功能描述:RESISTOR 220 MEG OHM 1%
T48DH-470MFI 制造商:TT Electronics / Welwyn 功能描述:RESISTOR 470 MEG OHM 1%