參數(shù)資料
型號: PIC16LF72-I/ML
廠商: Microchip Technology
文件頁數(shù): 80/136頁
文件大?。?/td> 0K
描述: IC PIC MCU FLASH 2KX14 28QFN
產(chǎn)品培訓(xùn)模塊: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標準包裝: 61
系列: PIC® 16F
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
連通性: I²C,SPI
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 22
程序存儲器容量: 3.5KB(2K x 14)
程序存儲器類型: 閃存
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 2 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 5x8b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-VQFN 裸露焊盤
包裝: 管件
產(chǎn)品目錄頁面: 639 (CN2011-ZH PDF)
PIC16F72
DS39597C-page 46
2007 Microchip Technology Inc.
FIGURE 9-1:
SSP BLOCK DIAGRAM
(SPI MODE)
To enable the serial port, SSP enable bit, SSPEN
(SSPCON<5>) must be set. To reset or reconfigure SPI
mode, clear bit SSPEN, re-initialize the SSPCON reg-
ister, and then set bit SSPEN. This configures the SDI,
SDO, SCK, and SS pins as serial port pins. For the pins
to behave as the serial port function, they must have
their data direction bits (in the TRISC register)
appropriately programmed. That is:
SDI must have TRISC<4> set
SDO must have TRISC<5> cleared
SCK (Master mode) must have TRISC<3>
cleared
SCK (Slave mode) must have TRISC<3> set
SS must have TRISA<5> set and ADCON must
be configured such that RA5 is a digital I/O
.
TABLE 9-1:
REGISTERS ASSOCIATED WITH SPI OPERATION
Read
Write
Internal
Data Bus
RC4/SDI/SDA
RC5/SDO
RA5/AN4/SS
RC3/SCK/
SSPSR reg
SSPBUF reg
SSPM3:SSPM0
bit0
Shift
Clock
SS Control
Enable
Edge
Select
Clock Select
TMR2 Output
TCY
Prescaler
4, 16, 64
TRISC<3>
2
Edge
Select
2
4
SCL
Note 1: When the SPI is in Slave mode with SS pin
control enabled (SSPCON<3:0> = 0100),
the SPI module will reset if the SS pin is
set to VDD.
2: If the SPI is used in Slave mode with
CKE = ‘1’, then the SS pin control must be
enabled.
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
0Bh,8Bh
10Bh,18Bh
INTCON
GIE
PEIE
TMR0IE
INTE
RBIE
TMR0IF
INTF
RBIF
0000 000x
0000 000u
0Ch
PIR1
ADIF
SSPIF
CCP1IF TMR2IF TMR1IF -0-- 0000 0000 0000
8Ch
PIE1
ADIE
—SSPIE
CCP1IE TMR2IE TMR1IE -0-- 0000 0000 0000
87h
TRISC
PORTC Data Direction Register
1111 1111
13h
SSPBUF
Synchronous Serial Port Receive Buffer/Transmit Register
xxxx xxxx
uuuu uuuu
14h
SSPCON
WCOL
SSPOV
SSPEN
CKP
SSPM3
SSPM2
SSPM1
SSPM0
0000 0000
85h
TRISA
PORTA Data Direction Register
--11 1111
94h
SSPSTAT
D/A
P
S
R/W
UA
BF
--00 0000
Legend: x = unknown, u = unchanged, - = unimplemented, read as ‘0’. Shaded cells are not used by the SSP in SPI mode.
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