PIC16C72-04I/SO Microchip Technology, PIC16C72-04I/SO Datasheet - Page 45
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PIC16C72-04I/SO
Manufacturer Part Number
PIC16C72-04I/SO
Description
IC MCU OTP 2KX14 A/D PWM 28SOIC
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F818-ISO.pdf
(6 pages)
3.PIC16C72-04SO.pdf
(289 pages)
4.PIC16C72-04SO.pdf
(125 pages)
5.PIC16C72-04SO.pdf
(8 pages)
Specifications of PIC16C72-04I/SO
Core Processor
PIC
Core Size
8-Bit
Speed
4MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
OTP
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 6 V
Data Converters
A/D 5x8b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
For Use With
XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MIL309-1024 - ADAPTER 28-SOIC TO 28-DIP309-1023 - ADAPTER 28-SOIC TO 28-DIP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
8.3.1
A block diagram of the SSP Module in SPI Mode is
shown in Figure 8-6.
The SPI mode allows 8-bits of data to be synchro-
nously transmitted and received simultaneously. To
accomplish communication, typically three pins are
used:
• Serial Data Out (SDO) RC5/SDO
• Serial Data In (SDI)
• Serial Clock (SCK)
Additionally a fourth pin may be used when in a slave
mode of operation:
• Slave Select (SS)
When initializing the SPI, several options need to be
specified. This is done by programming the appropriate
control bits in the SSPCON register (SSPCON<5:0>)
and SSPSTAT<7:6>. These control bits allow the fol-
lowing to be specified:
• Master Operation (SCK is the clock output)
• Slave Mode (SCK is the clock input)
• Clock Polarity (Idle state of SCK)
• Clock Edge (Output data on rising/falling edge of
• Clock Rate (master operation only)
• Slave Select Mode (Slave mode only)
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) appro-
priately programmed. That is:
• SDI must have TRISC<4> set
• SDO must have TRISC<5> cleared
• SCK (master operation) must have TRISC<3>
• SCK (Slave mode) must have TRISC<3> set
• SS must have TRISA<5> set
1998 Microchip Technology Inc.
SCK)
cleared
Note:
Note:
OPERATION OF SSP MODULE IN SPI
MODE - PIC16CR72
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 V
If the SPI is used in Slave Mode with
CKE = '1', then the SS pin control must be
enabled.
DD
.
RC4/SDI/SDA
RC3/SCK/SCL
RA5/SS/AN4
Preliminary
FIGURE 8-6:
RC4/SDI/SDA
RC5/SDO
RA5/SS/AN4
RC3/SCK/
SCL
PIC16C72 Series
Read
SS Control
Select
TRISC<3>
SSP BLOCK DIAGRAM
(SPI MODE)(PIC16CR72)
Edge
SSPM3:SSPM0
Enable
bit0
Select
Edge
SSPBUF reg
SSPSR reg
Clock Select
4
2
DS39016A-page 45
Write
Prescaler
4, 16, 64
clock
shift
TMR2 output
data bus
Internal
2
T
CY