参数资料
型号: PIC16C72A-04E/SO
厂商: Microchip Technology
文件页数: 37/120页
文件大小: 0K
描述: IC MCU OTP 2KX14 A/D PWM 28SOIC
产品培训模块: Asynchronous Stimulus
标准包装: 27
系列: PIC® 16C
核心处理器: PIC
芯体尺寸: 8-位
速度: 4MHz
连通性: I²C,SPI
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 22
程序存储器容量: 3.5KB(2K x 14)
程序存储器类型: OTP
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 4 V ~ 5.5 V
数据转换器: A/D 5x8b
振荡器型: 外部
工作温度: -40°C ~ 125°C
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
包装: 管件
PIC16C62B/72A
1999 Microchip Technology Inc.
Preliminary
DS35008B-page 23
3.3
PORTC and the TRISC Register
PORTC is an 8-bit wide bi-directional port. The corre-
sponding data direction register is TRISC. Setting a
TRISC bit (=1) will make the corresponding PORTC pin
an input, (i.e., put the corresponding output driver in a
hi-impedance mode). Clearing a TRISC bit (=0) will
make the corresponding PORTC pin an output, (i.e.,
put the contents of the output latch on the selected pin).
PORTC is multiplexed with several peripheral functions
(Table 3-5). PORTC pins have Schmitt Trigger input
buffers.
When enabling peripheral functions, care should be
taken in defining TRIS bits for each PORTC pin. Some
peripherals override the TRIS bit to make a pin an out-
put, while other peripherals override the TRIS bit to
make a pin an input. Since the TRIS bit override maybe
in effect while the peripheral is enabled, read-modify-
write instructions (BSF, BCF, XORWF) with TRISC as
destination should be avoided. The user should refer to
the corresponding peripheral section for the correct
TRIS bit settings.
FIGURE 3-5:
PORTC BLOCK DIAGRAM
(PERIPHERAL OUTPUT
OVERRIDE)
PORT/PERIPHERAL Select(2)
Data Bus
WR
PORT
WR
TRIS
RD
Data Latch
TRIS Latch
RD TRIS
Schmitt
Trigger
Q
D
Q
CK
QD
EN
Peripheral Data Out
0
1
Q
D
Q
CK
P
N
VDD
VSS
PORT
Peripheral
OE(3)
Peripheral input
I/O
pin(1)
Note 1:
I/O pins have diode protection to VDD and VSS.
2: Port/Peripheral select signal selects between port
data and peripheral output.
3: Peripheral OE (output enable) is only activated if
peripheral select is active.
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