PIC18F4520-I/P Microchip Technology Inc., PIC18F4520-I/P Datasheet - Page 174

• Manufacturer Part Number: PIC18F4520-I/P
• Description: 40 Pin, 32 KB Flash, 1536 RAM, 36 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F4520-I/P

• A/d Inputs: 13-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 10 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 36
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 40-pin PDIP
• Programmable Memory: 32K Bytes
• Ram Size: 1.5K Bytes
• Speed: 40 MHz
• Timers: 1-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC18F2420/2520/4420/4520
REGISTER 17-4:
DS39631A-page 172
bit 7
bit 6
bit 5
bit 4
bit 3-0
bit 7
WCOL: Write Collision Detect bit
In Master Transmit mode:
1 = A write to the SSPBUF register was attempted while the I
0 = No collision
In Slave Transmit mode:
1 = The SSPBUF register is written while it is still transmitting the previous word (must be
0 = No collision
In Receive mode (Master or Slave modes):
This is a “don’t care” bit.
SSPOV: Receive Overflow Indicator bit
In Receive mode:
1 = A byte is received while the SSPBUF register is still holding the previous byte (must be
0 = No overflow
In Transmit mode:
This is a “don’t care” bit in Transmit mode.
SSPEN: Synchronous Serial Port Enable bit
1 = Enables the serial port and configures the SDA and SCL pins as the serial port pins
0 = Disables serial port and configures these pins as I/O port pins
CKP: SCK Release Control bit
In Slave mode:
1 = Release clock
0 = Holds clock low (clock stretch), used to ensure data setup time
In Master mode:
Unused in this mode.
SSPM3:SSPM0: Synchronous Serial Port Mode Select bits
1111 = I
1110 = I
1011 = I
1000 = I
0111 = I
0110 = I
Bit combinations not specifically listed here are either reserved or implemented in SPI mode only.
Legend:
R = Readable bit
-n = Value at POR
SSPCON1: MSSP CONTROL REGISTER 1 (I
WCOL
R/W-0
Note:
transmission to be started (must be cleared in software)
cleared in software)
cleared in software)
2
2
2
2
2
2
C Slave mode, 10-bit address with Start and Stop bit interrupts enabled
C Slave mode, 7-bit address with Start and Stop bit interrupts enabled
C Firmware Controlled Master mode (Slave Idle)
C Master mode, clock = F
C Slave mode, 10-bit address
C Slave mode, 7-bit address
When enabled, the SDA and SCL pins must be properly configured as input or
output.
SSPOV
R/W-0
W = Writable bit
‘1’ = Bit is set
SSPEN
R/W-0
Preliminary
OSC
R/W-0
CKP
/(4 * (SSPADD + 1))
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
SSPM3
R/W-0
2
C MODE)
SSPM2
2
R/W-0
C conditions were not valid for a
 2004 Microchip Technology Inc.
x = Bit is unknown
SSPM1
R/W-0
SSPM0
R/W-0
bit 0