PIC16LF873A-I/SS Microchip Technology, PIC16LF873A-I/SS Datasheet - Page 73

• Manufacturer Part Number: PIC16LF873A-I/SS
• Description: IC MCU FLASH 4KX14 EE A/D 28SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16LF873A-I/SS

• Program Memory Type: FLASH
• Program Memory Size: 7KB (4K x 14)
• Package / Case: 28-SSOP
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Eeprom Size: 128 x 8
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16LF
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 192 B
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 22
• Number Of Timers: 1 x 16 bit
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163022, DV164120
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 5 bit
• Data Rom Size: 128 B
• Height: 1.75 mm
• Length: 10.2 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2 V
• Width: 5.3 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: PIC16LF873AI/SS

9.0
9.1
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,
display 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
9.2
The MSSP module has three associated registers.
These include a status register (SSPSTAT) and two
control registers (SSPCON 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.
9.3
The SPI mode allows 8 bits of data to be synchronously
transmitted and received simultaneously. All four
modes
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/C2OUT
Figure 9-1 shows the block diagram of the MSSP
module when operating in SPI mode.
 2003 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
SPI Mode
of
SPI
are
supported.
2
C)
2
C mode.
To
accomplish
FIGURE 9-1:
RC3/SCK/SCL
RC4/SDI/SDA
Note:
SS/C2OUT
RC5/SDO
RA5/AN4/
When the SPI is in Slave mode with SS pin
control enabled (SSPCON<3:0> = 0100),
the state of the SS pin can affect the state
read back from the TRISC<5> bit. The
Peripheral OE signal from the SSP mod-
ule in PORTC controls the state that is
read back from the TRISC<5> bit (see
Section 4.3 “PORTC and the TRISC
Register” for information on PORTC). If
Read-Modify-Write instructions, such as
BSF, are performed on the TRISC register
while the SS pin is high, this will cause the
TRISC<5> bit to be set, thus disabling the
SDO output.
Peripheral OE
SS Control
Read
Select
SMP:CKE
Edge
PIC16F87XA
Enable
MSSP BLOCK DIAGRAM
(SPI MODE)
bit0
Select
Edge
TRIS bit
Data to TX/RX in SSPSR
SSPBUF reg
2
SSPM3:SSPM0
SSPSR reg
Clock Select
4
2
DS39582B-page 71
Prescaler
4, 16, 64
TMR2 Output
Write
Clock
Shift
Data Bus
Internal
2
T
OSC