参数资料
型号: PIC16CR77-I/ML
厂商: Microchip Technology
文件页数: 105/172页
文件大小: 0K
描述: IC PIC MCU 8KX14 44QFN
标准包装: 45
系列: PIC® 16C
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: 14KB(8K x 14)
程序存储器类型: ROM
RAM 容量: 368 x 8
电压 - 电源 (Vcc/Vdd): 2 V ~ 5.5 V
数据转换器: A/D 8x8b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-VQFN 裸露焊盘
包装: 管件
PIC16CR7X
DS21993C-page 36
2007 Microchip Technology Inc.
4.4
PORTD and TRISD Registers
This section is not applicable to the PIC16CR73 or
PIC16CR76.
PORTD is an 8-bit port with Schmitt Trigger input buff-
ers. Each pin is individually configureable as an input or
output.
PORTD can be configured as an 8-bit wide micro-
processor port (Parallel Slave Port) by setting control
bit PSPMODE (TRISE<4>). In this mode, the input
buffers are TTL.
FIGURE 4-6:
PORTD BLOCK DIAGRAM
(IN I/O PORT MODE)
TABLE 4-7:
PORTD FUNCTIONS
TABLE 4-8:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTD
Data Bus
WR Port
WR TRIS
RD Port
Data Latch
TRIS Latch
RD TRIS
Schmitt
Trigger
Input
Buffer
I/O pin(1)
Note 1: I/O pins have protection diodes to VDD and VSS.
Q
D
CK
Q
D
CK
EN
QD
EN
Name
Bit#
Buffer Type
Function
RD0/PSP0
bit 0
ST/TTL(1)
Input/output port pin or parallel slave port bit 0
RD1/PSP1
bit 1
ST/TTL(1)
Input/output port pin or parallel slave port bit 1
RD2/PSP2
bit 2
ST/TTL(1)
Input/output port pin or parallel slave port bit 2
RD3/PSP3
bit 3
ST/TTL(1)
Input/output port pin or parallel slave port bit 3
RD4/PSP4
bit 4
ST/TTL(1)
Input/output port pin or parallel slave port bit 4
RD5/PSP5
bit 5
ST/TTL(1)
Input/output port pin or parallel slave port bit 5
RD6/PSP6
bit 6
ST/TTL(1)
Input/output port pin or parallel slave port bit 6
RD7/PSP7
bit 7
ST/TTL(1)
Input/output port pin or parallel slave port bit
Legend:
ST = Schmitt Trigger input, TTL = TTL input
Note 1:
Input buffers are Schmitt Triggers when in I/O mode and TTL buffers when in Parallel Slave Port mode.
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR,
BOR
Value on
all other
Resets
08h
PORTD
RD7
RD6
RD5
RD4
RD3
RD2
RD1
RD0
xxxx xxxx
uuuu uuuu
88h
TRISD
PORTD Data Direction Register
1111 1111
89h
TRISE
IBF
OBF
IBOV
PSPMODE
PORTE Data Direction bits
0000 -111
Legend:
x
= unknown, u = unchanged, – = unimplemented read as ‘0’. Shaded cells are not used by PORTD.
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