PORTC and TRISC Registers(1) " />
參數(shù)資料
型號(hào): PIC16C558-04/P
廠商: Microchip Technology
文件頁數(shù): 31/108頁
文件大小: 0K
描述: IC MCU OTP 2KX14 18DIP
產(chǎn)品培訓(xùn)模塊: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標(biāo)準(zhǔn)包裝: 25
系列: PIC® 16C
核心處理器: PIC
芯體尺寸: 8-位
速度: 4MHz
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 13
程序存儲(chǔ)器容量: 3.5KB(2K x 14)
程序存儲(chǔ)器類型: OTP
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 18-DIP(0.300",7.62mm)
包裝: 管件
產(chǎn)品目錄頁面: 636 (CN2011-ZH PDF)
配用: ISPICR1-ND - ADAPTER IN-CIRCUIT PROGRAMMING
309-1059-ND - ADAPTER 18 ZIF BD W/18SO PLUGS
DVA16XP180-ND - ADAPTER DEVICE FOR MPLAB-ICE
AC164010-ND - MODULE SKT PROMATEII DIP/SOIC
2002 Microchip Technology Inc.
Preliminary
DS40143D-page 27
PIC16C55X
5.3
PORTC and TRISC Registers(1)
PORTC is a 8-bit wide latch. All pins have data direc-
tion bits (TRIS registers) which can configure these
pins as input or output.
A '1' in the TRISC register puts the corresponding out-
put driver in a Hi-impedance mode. A '0' in the TRISC
register puts the contents of the output latch on the
selected pin(s).
Reading the PORTC register reads the status of the
pins, whereas writing to it will write to the port latch. All
write operations are read-modify-write operations. So a
write to a port implies that the port pins are first read,
then this value is modified and written to the port data
latch
FIGURE 5-5:
BLOCK DIAGRAM OF
PORT PINS RC<7:0>
TABLE 5-5:
PORTC FUNCTIONS
TABLE 5-6:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTC AND TRISC
Data
Bus
Q
D
Q
CK
Q
D
Q
CK
QD
EN
P
N
WR
PORTC
WR
Data Latch
TRIS Latch
RD TRISC
RD PORTC
V
SS
V
DD
I/O pin
V
SS
V
DD
TRISC
TTL
Input
Buffer
Name
Bit #
Buffer Type
Function
RC0
Bit 0
TTL
Bi-directional I/O port.
RC1
Bit 1
TTL
Bi-directional I/O port.
RC2
Bit 2
TTL
Bi-directional I/O port.
RC3
Bit 3
TTL
Bi-directional I/O port.
RC4
Bit 4
TTL
Bi-directional I/O port.
RC5
Bit 5
TTL
Bi-directional I/O port.
RC6
Bit 6
TTL
Bi-directional I/O port.
RC7
Bit 7
TTL
Bi-directional I/O port.
Legend:
ST = Schmitt Trigger, TTL = TTL input
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR
Value on
All Other
RESETS
07h
PORTC
RC7
RC6
RC5
RC4
RC3
RC2
RC1
RC0
xxxx xxxx
uuuu uuuu
87h
TRISC
TRISC7
TRISC6
TRISC5
TRISC4
TRISC3
TRISC2
TRISC1
TRISC0
1111 1111
Legend:
x = unknown, u = unchanged
Note
1:
PIC16C557 ONLY.
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