參數(shù)資料
型號: PIC16C558-04/SO
廠商: Microchip Technology
文件頁數(shù): 27/108頁
文件大?。?/td> 0K
描述: IC MCU OTP 2KX14 18SOIC
產(chǎn)品培訓(xùn)模塊: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標(biāo)準(zhǔn)包裝: 42
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
程序存儲器容量: 3.5KB(2K x 14)
程序存儲器類型: 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-SOIC(0.295",7.50mm 寬)
包裝: 管件
產(chǎn)品目錄頁面: 636 (CN2011-ZH PDF)
配用: XLT18SO-1-ND - SOCKET TRANSITION 18SOIC 300MIL
ISPICR1-ND - ADAPTER IN-CIRCUIT PROGRAMMING
309-1075-ND - ADAPTER 18-SOIC TO 18-SOIC
309-1024-ND - ADAPTER 28-SOIC TO 28-DIP
309-1011-ND - ADAPTER 18-SOIC TO 18-DIP
309-1010-ND - ADAPTER 18-SOIC TO 18-DIP
AC164010-ND - MODULE SKT PROMATEII DIP/SOIC
2002 Microchip Technology Inc.
Preliminary
DS40143D-page 23
PIC16C55X
5.0
I/O PORTS
The PIC16C554 and PIC16C558 have two ports,
PORTA and PORTB. The PIC16C557 has three ports,
PORTA, PORTB and PORTC.
5.1
PORTA and TRISA Registers
PORTA is a 5-bit wide latch. RA4 is a Schmitt Trigger
input and an open-drain output. Port RA4 is multiplexed
with the T0CKI clock input. All other RA port pins have
Schmitt Trigger input levels and full CMOS output driv-
ers. All pins have data direction bits (TRIS registers)
which can configure these pins as input or output.
A '1' in the TRISA register puts the corresponding out-
put driver in a Hi-impedance mode. A '0' in the TRISA
register puts the contents of the output latch on the
selected pin(s).
Reading the PORTA 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 5-1:
BLOCK DIAGRAM OF
PORT PINS RA<3:0>
FIGURE 5-2:
BLOCK DIAGRAM OF RA4
PIN
Note 1: On RESET, the TRISA register is set to all
inputs.
Data
Bus
Q
D
Q
CK
Q
D
Q
CK
QD
EN
P
N
WR
PORTA
WR
TRISA
Data Latch
TRIS Latch
RD TRISA
RD PORTA
Schmitt
input
buffer
V
SS
V
DD
I/O pin
Trigger
V
SS
V
DD
Data
bus
WR
PORTA
WR
TRISA
RD PORTA
Data Latch
TRISA Latch
RD TRISA
Schmitt
Trigger
input
buffer
N
V
SS
I/O pin(1)
TMR0 clock input
Q
D
Q
CK
Q
D
Q
CK
EN
QD
EN
V
SS
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