PIC16LC770-I/SS Microchip Technology, PIC16LC770-I/SS Datasheet - Page 94
![IC MCU OTP 2KX14 A/D PWM 20SSOP](/photos/6/58/65895/150-20-ssop_sml.jpg)
PIC16LC770-I/SS
Manufacturer Part Number
PIC16LC770-I/SS
Description
IC MCU OTP 2KX14 A/D PWM 20SSOP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16LC770-I/SS
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)
2.5 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
Eeprom Size
-
Other names
PIC16LC770I/SS
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PIC16C717/770/771
9.2.15
The master asserts a STOP condition on the SDA and
SCL pins at the end of a receive/transmit by setting the
Stop Sequence Enable bit PEN (SSPCON2<2>). At the
end of a receive/transmit plus Acknowledge, the SCL
line is held low immediately following the falling edge of
the ninth SCL pulse. When the PEN bit is set, the mas-
ter will assert the SDA line low. When the SDA line is
sampled low, the baud rate generator is loaded from
SSPADD<6:0> and counts down to 0. When the baud
rate generator times out, the SCL pin is brought high,
the BRG is reloaded and one T
tor rollover count) later, the SDA pin is de-asserted.
The SDA pin transition from low to high while SCL is
high is the STOP condition and causes the P bit (SSP-
STAT<4>) to be set. Following this the baud rage gen-
erator is reloaded with the contents of SSPADD<6:0>
and resumes its count. When the baud rate generator
FIGURE 9-21:
DS41120B-page 92
STOP CONDITION TIMING
SCL
SDA
Note: T
Write to SSPCON2
Falling edge of
9th clock
BRG
STOP CONDITION RECEIVE OR TRANSMIT MODE
NACK
= one baud rate generator period.
Set PEN
BRG
(baud rate genera-
SDA asserted low before rising edge of clock
to setup STOP condition.
T
T
BRG
BRG
Advance Information
T
SCL brought high after T
BRG
P bit (SSPSTAT<4>) is set
P
T
BRG
times out (T
the PEN bit is cleared and the SSPIF bit is set
(Figure 9-21).
Whenever the firmware decides to take control of the
bus, it should first determine if the bus is busy by check-
ing the S and P bits in the SSPSTAT register. When the
MSSP module detects a START or STOP condition the
SSPIF flag is set. If the bus is busy (S bit is set), then
the CPU can be configured to be interrupted when
when the bus is free by enabling the SSPIF interrupt to
detect the STOP bit.
9.2.15.1
If the user writes the SSPBUF when a STOP sequence
is in progress, then WCOL is set and the contents of the
buffer are unchanged (the write doesn’t occur).
PEN bit (SSPCON2<2>) is cleared by
hardware and the SSPIF bit is set
BRG
WCOL STATUS FLAG
BRG
) the STOP condition is complete and
2002 Microchip Technology Inc.
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