PIC18LF2439-I/SP Microchip Technology, PIC18LF2439-I/SP Datasheet - Page 127
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PIC18LF2439-I/SP
Manufacturer Part Number
PIC18LF2439-I/SP
Description
IC MCU FLASH 6KX16 EE A/D 28DIP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Specifications of PIC18LF2439-I/SP
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
21
Program Memory Size
12KB (6K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
640 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.300", 7.62mm)
Processor Series
PIC18LF
Core
PIC
Data Bus Width
8 bit
Data Ram Size
640 B
Interface Type
I2C, SPI, AUSART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
21
Number Of Timers
16 bit
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
DV164005, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
5 bit
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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16.0
16.1
The Master Synchronous Serial Port (MSSP) module is
a serial interface useful for communicating with other
peripheral or microcontroller devices. These peripheral
devices may be serial EEPROMs, shift registers, dis-
play drivers, A/D converters, etc. The MSSP module
can operate in one of two modes:
• Serial Peripheral Interface (SPI)
• Inter-Integrated Circuit (I
The I
hardware:
• Master mode
• Multi-Master mode
• Slave mode
16.2
The MSSP module has three associated registers.
These include a status register (SSPSTAT) and two
control registers (SSPCON1 and SSPCON2). The use
of these registers and their individual configuration bits
differ significantly, depending on whether the MSSP
module is operated in SPI or I
Additional details are provided under the individual
sections.
2002 Microchip Technology Inc.
- Full Master mode
- Slave mode (with general address call)
2
C interface supports the following modes in
MASTER SYNCHRONOUS
SERIAL PORT (MSSP)
MODULE
Master SSP (MSSP) Module
Overview
Control Registers
2
C)
2
C mode.
Preliminary
16.3
The SPI mode allows 8 bits of data to be synchronously
transmitted and received, simultaneously. All four modes
of SPI are supported. To accomplish communication,
typically three pins are used:
• Serial Data Out (SDO) - RC5/SDO
• Serial Data In (SDI) - RC4/SDI/SDA
• Serial Clock (SCK) - RC3/SCK/SCL
Additionally, a fourth pin may be used when in a Slave
mode of operation:
• Slave Select (SS) - RA5/AN4/SS/LVDIN
Figure 16-1 shows the block diagram of the MSSP
module when operating in SPI mode.
FIGURE 16-1:
RC4/SDI/SDA
RA5/AN4/SS/
RC3/SCK/
RC5/SDO
SCL
LVDIN
SPI Mode
Read
SS Control
Select
SMP:CKE
Edge
PIC18FXX39
MSSP BLOCK DIAGRAM
(SPI MODE)
Enable
bit0
Select
Edge
TRIS bit
Data to TX/RX in SSPSR
SSPBUF reg
2
SSPSR reg
Clock Select
SSPM3:SSPM0
÷
2
DS30485A-page 125
Prescaler
4 / 16 / 64
Write
4
clock
shift
Data Bus
Internal
T
OSC
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