PIC16C770-I/SS Microchip Technology, PIC16C770-I/SS Datasheet - Page 93

• Manufacturer Part Number: PIC16C770-I/SS
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SSOP,20PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C770-I/SS

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: OTP
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 6x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT20SS1-1 - SOCKET TRANSITION 20DIP 20SSOP309-1014 - ADAPTER 20-SSOP TO 20-DIP
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PIC16C770I/SS

9.2.14
An Acknowledge sequence is enabled by setting the
Acknowledge
(SSPCON2<4>). When this bit is set, the SCL pin is
pulled low and the contents of the Acknowledge data bit
ACKDT (SSPCON2<5>) is presented on the SDA pin.
If the user wishes to generate an Acknowledge (ACK),
then the ACKDT bit should be cleared. Otherwise, the
user should set the ACKDT bit (NACK) before starting
an Acknowledge sequence. The baud rate generator is
then loaded from SSPADD<6:0> and counts for one
rollover period (T
(pulled high). When the SCL pin is sampled high (clock
FIGURE 9-20:
2002 Microchip Technology Inc.
ACKNOWLEDGE SEQUENCE
TIMING
SSPIF
Note: T
sequence
BRG
SDA
Acknowledge sequence starts here,
SCL
). The SCL pin is then de-asserted
ACKNOWLEDGE SEQUENCE WAVEFORM
SSPIF occurs at the
end of receive
BRG
= one baud rate generator period.
ACKEN = 1, ACKDT = 0
enable
Write to SSPCON2
bit,
8
D0
Advance Information
ACKEN
Cleared in
software
T
BRG
ACK
arbitration), the baud rate generator is reloaded and
counts for another T
period, the following events occur (see Figure 9-20):
• The SCL pin is pulled low.
• The ACKEN bit is automatically cleared.
• The baud rate generator is turned off.
• The MSSP module goes into IDLE mode.
9.2.14.1
If the user writes the SSPBUF when an Acknowledge
sequence is in progress, the WCOL is set and the con-
tents of the buffer are unchanged (the write doesn’t
occur).
T
BRG
9
PIC16C717/770/771
SSPIF occurs at the end
of Acknowledge sequence
WCOL STATUS FLAG
ACKEN automatically cleared
BRG
Cleared in
software
. At the completion of the T
DS41120B-page 91
BRG