PIC18C858-E/L Microchip Technology, PIC18C858-E/L Datasheet - Page 147

• Manufacturer Part Number: PIC18C858-E/L
• Description: IC MCU OTP 16KX16 CAN 84PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 18Cr

Specifications of PIC18C858-E/L

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 68
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: OTP
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 84-PLCC
• For Use With: AC164310 - MODULE SKT FOR PM3 84PLCCDVA18XL840 - ADAPTER DEVICE ICE 84PLCCAC174012 - MODULE SKT PROMATEII 84PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: PIC18C858E/L

15.4
The MSSP module in I
master and slave functions (including general call sup-
port) and provides interrupts on START and STOP bits
in hardware to determine a free bus (Multi-master
mode). The MSSP module implements the standard
mode specifications, as well as 7-bit and 10-bit
addressing.
Two pins are used for data transfer. These are the
RC3/SCK/SCL pin, which is the clock (SCL), and the
RC4/SDI/SDA pin, which is the data (SDA). The user
must configure these pins as inputs or outputs through
the TRISC<4:3> bits.
The MSSP module functions are enabled by setting
MSSP Enable bit SSPEN (SSPCON1 register).
FIGURE 15-6: MSSP BLOCK DIAGRAM
The MSSP module has these six registers for I
ation:
• MSSP Control Register1 (SSPCON1)
• MSSP Control Register2 (SSPCON2)
• MSSP Status Register (SSPSTAT)
• Serial Receive/Transmit Buffer (SSPBUF)
• MSSP Shift Register (SSPSR) - Not directly
• MSSP Address Register (SSPADD)
 2000 Microchip Technology Inc.
RC3/SCK/SCL
accessible
RC4/
SDI/
SDA
Note:
MSSP I
I/O pins have diode protection to V
Read
Shift
Clock
2
(I
C Operation
2
MSb
C MODE)
STOP bit detect
2
Match Detect
SSPADD reg
SSPBUF reg
START and
C mode, fully implements all
SSPSR reg
LSb
DD
Write
and V
Internal
Data Bus
(SSPSTAT reg)
Set, RESET
S, P bits
Advanced Information
Addr Match
SS
2
.
C oper-
The SSPCON1 register allows control of the I
ation. The SSPM3:SSPM0 mode selection bits
(SSPCON1 register) allow one of the following I
modes to be selected:
• I
• I
• I
• I
• I
• I
Selection of any I
forces the SCL and SDA pins to be open drain, pro-
vided these pins are programmed to inputs by setting
the appropriate TRISC bits.
15.4.1
In Slave mode, the SCL and SDA pins must be config-
ured as inputs (TRISC<4:3> set). The MSSP module
will override the input state with the output data when
required (slave-transmitter).
When an address is matched, or the data transfer after
an address match is received, the hardware automati-
cally will generate the acknowledge (ACK) pulse and
load the SSPBUF register with the received value cur-
rently in the SSPSR register.
If either or both of the following conditions are true, the
MSSP module will not give this ACK pulse:
a)
b)
In this event, the SSPSR register value is not loaded
into the SSPBUF, but bit SSPIF (PIR registers) is set.
The BF bit is cleared by reading the SSPBUF register,
while bit SSPOV is cleared through software.
The SCL clock input must have a minimum high and
low for proper operation. The high and low times of the
I
MSSP module, is shown in timing parameter #100 and
parameter #101.
2
C specification, as well as the requirement of the
STOP bit interrupts enabled
STOP bit interrupts enabled
is idle
2
2
2
2
2
2
C Master mode, clock = OSC/4 (SSPADD +1)
C Slave mode (7-bit address)
C Slave mode (10-bit address)
C Slave mode (7-bit address), with START and
C Slave mode (10-bit address), with START and
C Firmware controlled master operation, slave
The buffer full bit BF (SSPCON1 register) was
set before the transfer was received.
The overflow bit SSPOV (SSPCON1 register)
was set before the transfer was received.
SLAVE MODE
2
C mode with the SSPEN bit set,
PIC18CXX8
DS30475A-page 147
2
C oper-
2
C