参数资料
型号: PIC14000T-04I/SS
厂商: Microchip Technology
文件页数: 81/153页
文件大小: 0K
描述: IC MCU OTP 4KX14 A/D 28SSOP
标准包装: 2,100
系列: PIC® 14
核心处理器: PIC
芯体尺寸: 8-位
速度: 4MHz
连通性: I²C
外围设备: POR,温度传感器,WDT
输入/输出数: 20
程序存储器容量: 7KB(4K x 14)
程序存储器类型: OTP
RAM 容量: 192 x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 6 V
数据转换器: 斜率 A/D
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 28-SSOP(0.209",5.30mm 宽)
包装: 带卷 (TR)
1996 Microchip Technology Inc.
Preliminary
DS40122B-page 33
PIC14000
FIGURE 5-10: BLOCK DIAGRAM OF PORTD<1:0> PINS
FIGURE 5-11: PORTD DATA REGISTER
Legend: U = unimplemented, read as ‘0’, x = unknown.
08h
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
PORTD
RD7/AN7 RD6/AN6 RD5/AN5 RD4/AN4
RD3/REFB
RD2/CMPB RD1/SDAB RD0/SCLB
Read/Write
R/W
POR value xxh
XXXX
X
Bit
Name
Function
B7
RD7/AN7
GPIO or analog input. Returns value on pin RD7/AN7 when used as a digital
input. When configured as an analog input, reads as ‘0’.
B6
RD6/AN6
GPIO or analog input. Returns value on pin RD6/AN6 when used as a digital
input. When configured as an analog input, reads as ‘0’.
B5
RD5/AN5
GPIO or analog input. This pin can connect to a level shift network. If
enabled, a +0.5V offset is added to the input voltage. When congured as
an analog input, reads as ‘0’.
B4
RD4/AN4
GPIO or analog input. Returns value on pin RD4/AN4 when used as a digital
input. When configured as an analog input, reads as ‘0’.
B3
RD3/REFB
This pin can serve as a GPIO, or programmable reference B output.
B2
RD2/CMPB
This pin can serve as a GPIO, or comparator B output.
B1
RD1/SDAB
Alternate synchronous serial data I/O for I2C interface enabled by setting
the I2CSEL bit in the MISC register. This pin can also serve as a general
purpose I/O. This pin has an N-channel pull-up to VDD which is disabled in
I2C mode.
B0
RD0/SCLB
Alternate synchronous serial clock for I2C interface, enabled by setting the
I2CSEL bit in the MISC register. This pin can also serve as a general pur-
pose I/O. This pin has an N-Channel pull-up to VDD which is disabled in I2C
mode.
D
Q
CK Q
D
Q
CK Q
D
Q
EN
Data
Bus
Write
PORTD
Write
TRISD
Read
TRISD
Read
PortD
Note: I/O pins have protection diodes to VDD and VSS. These pins do not have a P-channel pull-up.
N
I/O
Pin
VSS
VDD
Schmitt Trigger
Input Buffer
I2CCON<5>
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