参数资料
型号: PIC12F519T-I/MC
厂商: Microchip Technology
文件页数: 18/96页
文件大小: 0K
描述: IC PIC MCU FLASH 1KX12 8DFN
产品培训模块: Asynchronous Stimulus
标准包装: 3,300
系列: PIC® 12F
核心处理器: PIC
芯体尺寸: 8-位
速度: 8MHz
外围设备: POR,WDT
输入/输出数: 5
程序存储器容量: 1.5KB(1K x 12)
程序存储器类型: 闪存
RAM 容量: 41 x 8
电压 - 电源 (Vcc/Vdd): 2 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 8-VFDFN 裸露焊盘
包装: 带卷 (TR)
配用: AC164334-ND - MODULE SOCKET FOR 8L 2X3MM DFN
XLT08DFN2-ND - SOCKET TRANSITION ICE 14DIP/8DFN
其它名称: PIC12F519T-I/MCTR
2008 Microchip Technology Inc.
DS41319B-page 23
PIC12F519
6.0
I/O PORT
As with any other register, the I/O register(s) can be
written and read under program control. However, read
instructions (e.g., MOVF PORTB,W) always read the I/O
pins independent of the pin’s Input/Output modes. On
Reset, all I/O ports are defined as input (inputs are at
high-impedance) since the I/O control registers are all
set.
6.1
GPIO
GPIO is an 8-bit I/O register. Only the low-order 6 bits
are used (GP<5:0>). Bits 7 and 6 are unimplemented
and read as ‘0’s. Please note that GP3 is an input-only
pin. The Configuration Word can set several I/O’s to
alternate functions. When acting as alternate functions,
the pins will read as ‘0’ during a port read. Pins GP0,
GP1, and GP3 can be configured with weak pull-ups
and also for wake-up on change. The wake-up on
change and weak pull-up functions are not pin select-
able. If GP3/MCLR is configured as MCLR, weak pull-
up is always on and wake-up on change for this pin is
not enabled.
6.2
TRIS Registers
The Output Driver Control registers are loaded with
the contents of the W Register by executing the TRIS
f
instruction. A ‘1’ from a TRISGPIO Register bit puts
the corresponding output driver in a high-impedance
(Input) mode. A ‘0’ puts the contents of the output data
latch on the selected pins, enabling the output buffer.
The TRISGPIO register is “write-only”. Bits <5:0> are
set (output drivers disabled) upon Reset.
TABLE 6-1:
WEAK PULL-UP ENABLED PINS
Note:
If the T0CS bit is set to ‘1’, it will override
the TRISGPIO function on the T0CKI pin.
Pin
WPU
WU
GP0
Y
GP1
Y
GP2
N
GP3
Y(1)
Y
GP4
N
GP5
N
GP6
N
Note 1:
When MCLRE = 1, the weak pull-up on GP3/MCLR is always
enabled.
2:
WPU = Weak pull-up; WU = Wake-up.
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