- 您现在的位置：买卖IC网 > PDF目录11356 > PIC16F74T-I/L (Microchip Technology)IC MCU FLASH 4KX14 A/D 44PLCC PDF资料下载
参数资料
| 型号： | PIC16F74T-I/L |
| 厂商： | Microchip Technology |
| 文件页数： | 41/104页 |
| 文件大小： | 0K |
| 描述： | IC MCU FLASH 4KX14 A/D 44PLCC |
| 产品培训模块： | Asynchronous Stimulus |
| 标准包装： | 500 |
| 系列： | PIC® 16F |
| 核心处理器： | PIC |
| 芯体尺寸： | 8-位 |
| 速度： | 20MHz |
| 连通性： | I²C，SPI，UART/USART |
| 外围设备： | 欠压检测/复位，POR，PWM，WDT |
| 输入/输出数： | 33 |
| 程序存储器容量： | 7KB（4K x 14） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 192 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4 V ~ 5.5 V |
| 数据转换器： | A/D 8x8b |
| 振荡器型： | 外部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 44-LCC（J 形引线） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页当前第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页
2002 Microchip Technology Inc.
DS30325B-page 31
PIC16F7X
4.0
I/O PORTS
Some pins for these I/O ports are multiplexed with an
alternate function for the peripheral features on the
device. In general, when a peripheral is enabled, that
pin may not be used as a general purpose I/O pin.
Additional information on I/O ports may be found in the
PICmicro
Mid-Range
Reference
Manual,
(DS33023).
4.1
PORTA and the TRISA Register
PORTA is a 6-bit wide, bi-directional port. The corre-
sponding data direction register is TRISA. Setting a
TRISA bit (= ‘1’) will make the corresponding PORTA
pin an input (i.e., put the corresponding output driver in
a Hi-Impedance mode). Clearing a TRISA bit (= ‘0’) will
make the corresponding PORTA pin an output (i.e., put
the contents of the output latch on the selected pin).
Reading the PORTA register reads the status of the
pins, whereas writing to it will write to the port latch. All
write operations are read-modify-write operations.
Therefore, a write to a port implies that the port pins are
read, the value is modified and then written to the port
data latch.
Pin RA4 is multiplexed with the Timer0 module clock
input to become the RA4/T0CKI pin. The RA4/T0CKI
pin is a Schmitt Trigger input and an open drain output.
All other PORTA pins have TTL input levels and full
CMOS output drivers.
Other PORTA pins are multiplexed with analog inputs
and analog VREF input. The operation of each pin is
selected by clearing/setting the control bits in the
ADCON1 register (A/D Control Register1).
The TRISA register controls the direction of the RA
pins, even when they are being used as analog inputs.
The user must ensure the bits in the TRISA register are
maintained set, when using them as analog inputs.
EXAMPLE 4-1:
INITIALIZING PORTA
FIGURE 4-1:
BLOCK DIAGRAM OF
RA3:RA0 AND RA5 PINS
FIGURE 4-2:
BLOCK DIAGRAM OF
RA4/T0CKI PIN
Note:
On a Power-on Reset, these pins are con-
figured as analog inputs and read as '0'.
BCF
STATUS, RP0
;
BCF
STATUS, RP1
; Bank0
CLRF
PORTA
; Initialize PORTA by
; clearing output
; data latches
BSF
STATUS, RP0
; Select Bank 1
MOVLW
0x06
; Configure all pins
MOVWF
ADCON1
; as digital inputs
MOVLW
0xCF
; Value used to
; initialize data
; direction
MOVWF
TRISA
; Set RA<3:0> as inputs
; RA<5:4> as outputs
; TRISA<7:6>are always
; read as ’0’.
Data Bus
P
N
WR Port
WR TRIS
RD TRIS
RD PORT
VSS
VDD
I/O pin(1)
Note 1: I/O pins have protection diodes to VDD and VSS.
Analog
Input
Mode
TTL
Input
Buffer
To A/D Converter
EN
QD
EN
Data Latch
TRIS Latch
Q
D
Q
CK
Q
D
Q
CK
Data Bus
WR PORT
WR TRIS
RD PORT
Data Latch
TRIS Latch
RD TRIS
Schmitt
Trigger
Input
Buffer
N
VSS
I/O pin(1)
TMR0 Clock Input
Q
D
Q
CK
Q
D
Q
CK
EN
QD
EN
Note 1: I/O pin has protection diodes to VSS only.
相关PDF资料 |
PDF描述 |
|---|---|
| VE-JW4-IX-F3 | CONVERTER MOD DC/DC 48V 75W |
| DSPIC33FJ64MC506A-E/PT | IC DSPIC MCU/DSP 64K 64-TQFP |
| VE-JW4-IX-F1 | CONVERTER MOD DC/DC 48V 75W |
| VE-BWK-IY-S | CONVERTER MOD DC/DC 40V 50W |
| VE-BWJ-IY-S | CONVERTER MOD DC/DC 36V 50W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PIC16F753-E/ML | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 16QFN 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
| PIC16F753-E/P | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 14PDIP 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
| PIC16F753-E/SL | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 14SOIC 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
| PIC16F753-E/ST | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 14TSSOP 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
| PIC16F753-I/ML | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 16QFN 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
发布紧急采购，3分钟左右您将得到回复。