参数资料
型号: PIC18F442-I/L
厂商: Microchip Technology
文件页数: 96/134页
文件大小: 0K
描述: IC MCU FLASH 8KX16 EE A/D 44PLCC
产品培训模块: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
标准包装: 27
系列: PIC® 18F
核心处理器: PIC
芯体尺寸: 8-位
速度: 40MHz
连通性: I²C,SPI,UART/USART
外围设备: 欠压检测/复位,LVD,POR,PWM,WDT
输入/输出数: 34
程序存储器容量: 16KB(8K x 16)
程序存储器类型: 闪存
EEPROM 大小: 256 x 8
RAM 容量: 768 x 8
电压 - 电源 (Vcc/Vdd): 4.2 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LCC(J 形引线)
包装: 管件
配用: AC164309-ND - MODULE SKT FOR PM3 44PLCC
XLT44L2-ND - SOCKET TRAN ICE 44PLCC
444-1001-ND - DEMO BOARD FOR PICMICRO MCU
其它名称: PIC18F442I/L
PIC16C9XX
DS30444E - page 64
1997 Microchip Technology Inc.
FIGURE 11-2: SSPCON: SYNC SERIAL PORT CONTROL REGISTER (ADDRESS 14h)
R/W-0
WCOL
SSPOV
SSPEN
CKP
SSPM3
SSPM2
SSPM1
SSPM0
R = Readable bit
W = Writable bit
U = Unimplemented bit,
read as ‘0’
- n =Value at POR reset
bit7
bit0
bit 7:
WCOL: Write Collision Detect bit
1 = The SSPBUF register is written while it is still transmitting the previous word
(must be cleared in software)
0 = No collision
bit 6:
SSPOV: Receive Overow Indicator bit
In SPI mode
1 = A new byte is received while the SSPBUF register is still holding the previous data. In case of overow,
the data in SSPSR is lost. Overow can only occur in slave mode. The user must read the SSPBUF, even
if only transmitting data, to avoid setting overow. In master mode the overow bit is not set since each
new reception (and transmission) is initiated by writing to the SSPBUF register.
0 = No overow
In I2C mode
1 = A byte is received while the SSPBUF register is still holding the previous byte. SSPOV is a "don’t care"
in transmit mode. SSPOV must be cleared in software in either mode.
0 = No overow
bit 5:
SSPEN: Synchronous Serial Port Enable bit
In SPI mode
1 = Enables serial port and congures SCK, SDO, and SDI as serial port pins
0 = Disables serial port and congures these pins as I/O port pins
In I2C mode
1 = Enables the serial port and congures the SDA and SCL pins as serial port pins
0 = Disables serial port and congures these pins as I/O port pins
In both modes, when enabled, these pins must be properly congured as input or output.
bit 4:
CKP: Clock Polarity Select bit
In SPI mode
1 = Idle state for clock is a high level
0 = Idle state for clock is a low level
In I2C mode
SCK release control
1 = Enable clock
0 = Holds clock low (clock stretch) (Used to ensure data setup time)
bit 3-0: SSPM3:SSPM0: Synchronous Serial Port Mode Select bits
0000
= SPI master mode, clock = FOSC/4
0001
= SPI master mode, clock = FOSC/16
0010
= SPI master mode, clock = FOSC/64
0011
= SPI master mode, clock = TMR2 output/2
0100
= SPI slave mode, clock = SCK pin. SS pin control enabled.
0101
= SPI slave mode, clock = SCK pin. SS pin control disabled. SS can be used as I/O pin
0110
= I2C slave mode, 7-bit address
0111
= I2C slave mode, 10-bit address
1011
= I2C Firmware controlled master mode (slave idle)
1110
= I2C slave mode, 7-bit address with start and stop bit interrupts enabled
1111
= I2C slave mode, 10-bit address with start and stop bit interrupts enabled
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