PIC18C658-I/L Microchip Technology, PIC18C658-I/L Datasheet - Page 155

• Manufacturer Part Number: PIC18C658-I/L
• Description: IC PIC MCU OTP 16KX16 68PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 18Cr

Specifications of PIC18C658-I/L

• Core Size: 8-Bit
• Program Memory Size: 32KB (16K x 16)
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: CAN, I²C, SPI, UART/USART
• Number Of I /o: 52
• Program Memory Type: OTP
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 68-PLCC
• Controller Family/series: PIC18
• No. Of I/o's: 52
• Ram Memory Size: 1.5KB
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Processor Series: PIC18C
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 1536 B
• Interface Type: 3-Wire, I2C, SPI, USART, CAN
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 52
• Number Of Timers: 4 bit
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: ICE2000, DM163007, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164308 - MODULE SKT FOR PM3 68PLCCDVA18PQ640 - DEVICE ADAPT PIC18C658 64-TQFPAC174007 - MODULE SKT PROMATEII 68PLCC
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: PIC18C658IL; Q1162292

15.4.7
A Repeated START condition occurs when the RSEN
bit (SSPCON2 register) is programmed high and the
I
bit is set, the SCL pin is asserted low. When the SCL
pin is sampled low, the baud rate generator is loaded
with the contents of SSPADD<5:0> and begins count-
ing. The SDA pin is released (brought high) for one
baud rate generator count (T
generator times out, if SDA is sampled high, the SCL
pin will be de-asserted (brought high). When SCL is
sampled high, the baud rate generator is re-loaded with
the contents of SSPADD<6:0> and begins counting.
SDA and SCL must be sampled high for one T
This action is then followed by assertion of the SDA pin
(SDA = 0) for one T
this, the RSEN bit (SSPCON2 register) will be automat-
ically cleared and the baud rate generator will not be
reloaded, leaving the SDA pin held low. As soon as a
START condition is detected on the SDA and SCL pins,
the S bit (SSPSTAT register) will be set. The SSPIF bit
will not be set until the baud rate generator has
timed-out.
FIGURE 15-14: REPEAT START CONDITION WAVEFORM
 2000 Microchip Technology Inc.
2
C logic module is in the IDLE state. When the RSEN
Note 1: If RSEN is programmed while any other
2: A bus collision during the Repeated
I
CONDITION TIMING
2
C MASTER MODE REPEATED START
event is in progress, it will not take effect.
START condition occurs if:
• SDA is sampled low when SCL goes
• SCL goes low before SDA is
from low to high.
asserted low. This may indicate that
another master is attempting to
transmit a data "1".
Falling edge of ninth clock
BRG ,
SDA
SCL
while SCL is high. Following
BRG
End of Xmit
). When the baud rate
Write to SSPCON2
occurs here.
SDA = 1,
SCL(no change)
Advanced Information
BRG
T
SDA = 1,
SCL = 1
.
BRG
T
BRG
Immediately following the SSPIF bit getting set, the
user may write the SSPBUF with the 7-bit address in
7-bit mode, or the default first address in 10-bit mode.
After the first eight bits are transmitted and an ACK is
received, the user may then transmit an additional
eight bits of address (10-bit mode) or eight bits of data
(7-bit mode).
15.4.7.1
If the user writes the SSPBUF when a Repeated
START sequence is in progress, the WCOL is set and
the contents of the buffer are unchanged (the write
doesn’t occur).
Note:
Sr = Repeated START
T
BRG
At completion of START bit,
hardware clear RSEN bit
Set S (SSPSTAT<3>)
WCOL Status Flag
Because queueing of events is not
allowed, writing of the lower 5 bits of
SSPCON2 is disabled until the Repeated
START condition is complete.
and set SSPIF
Write to SSPBUF occurs here.
T
BRG
1st Bit
T
BRG
PIC18CXX8
DS30475A-page 155