参数资料
型号: PIC16F630T-I/SL
厂商: Microchip Technology
文件页数: 48/132页
文件大小: 0K
描述: IC MCU FLASH 1KX14 14SOIC
产品培训模块: Asynchronous Stimulus
标准包装: 2,600
系列: PIC® 16F
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
外围设备: 欠压检测/复位,POR,WDT
输入/输出数: 12
程序存储器容量: 1.75KB(1K x 14)
程序存储器类型: 闪存
EEPROM 大小: 128 x 8
RAM 容量: 64 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: 14-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
PIC16F630/676
DS40039F-page 22
2010 Microchip Technology Inc.
REGISTER 3-2:
TRISA — PORTA TRI-STATE REGISTER (ADDRESS: 85h)
REGISTER 3-3:
WPUA — WEAK PULL-UP REGISTER (ADDRESS: 95h)
3.2.2
INTERRUPT-ON-CHANGE
Each of the PORTA pins is individually configurable as
an interrupt-on-change pin. Control bits IOCAx enable
or disable the interrupt function for each pin. Refer to
Register 3-4. The interrupt-on-change is disabled on a
Power-on Reset.
For enabled interrupt-on-change pins, the values are
compared with the old value latched on the last read of
PORTA. The ‘mismatch’ outputs of the last read are
OR’d together to set, the PORTA Change Interrupt flag
bit (RAIF) in the INTCON register.
This interrupt can wake the device from Sleep. The
user, in the Interrupt Service Routine, can clear the
interrupt in the following manner:
a)
Any read or write of PORTA. This will end the
mismatch condition.
b) Clear the flag bit RAIF.
A mismatch condition will continue to set flag bit RAIF.
Reading PORTA will end the mismatch condition and
allow flag bit RAIF to be cleared.
U-0
R/W-x
R-1
R/W-x
TRISA5
TRISA4
TRISA3
TRISA2
TRISA1
TRISA0
bit 7
bit 0
bit 7-6:
Unimplemented: Read as ‘0’
bit 5-0:
TRISA<5:0>: PORTA Tri-State Control bits
1 = PORTA pin configured as an input (tri-stated)
0 = PORTA pin configured as an output
Note:
TRISA<3> always reads 1.
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
- n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
U-0
R/W-1
U-0
R/W-1
WPUA5
WPUA4
WPUA2
WPUA1
WPUA0
bit 7
bit 0
bit 7-6
Unimplemented: Read as ‘0’
bit 5-4
WPUA<5:4>: Weak Pull-up Register bits
1
= Pull-up enabled
0
= Pull-up disabled
bit 3
Unimplemented: Read as ‘0’
bit 2-0
WPUA<2:0>: Weak Pull-up Register bits
1
= Pull-up enabled
0
= Pull-up disabled
Note 1: Global RAPU must be enabled for individual pull-ups to be enabled.
2: The weak pull-up device is automatically disabled if the pin is in Output mode
(TRISA = 0).
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
- n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
Note:
If a change on the I/O pin should occur
when the read operation is being executed
(start of the Q2 cycle), then the RAIF
interrupt flag may not get set.
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