PIC16C923-08/PT Microchip Technology, PIC16C923-08/PT Datasheet - Page 71
![IC MCU OTP 4KX14 LCD DVR 64TQFP](/photos/6/81/68123/c04-066_pf_sml.jpg)
PIC16C923-08/PT
Manufacturer Part Number
PIC16C923-08/PT
Description
IC MCU OTP 4KX14 LCD DVR 64TQFP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Datasheets
1.PIC16F818-ISO.pdf
(6 pages)
2.PIC16C923-04L.pdf
(189 pages)
3.PIC16C923-04L.pdf
(10 pages)
Specifications of PIC16C923-08/PT
Core Processor
PIC
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SPI
Peripherals
LCD, POR, PWM, WDT
Number Of I /o
25
Program Memory Size
7KB (4K x 14)
Program Memory Type
OTP
Ram Size
176 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 6 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
64-TFQFP
For Use With
DVA16PQ640 - ADAPTER DEVICE FOR MPLAB-ICEAC164023 - MODULE SKT PROMATEII 68TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
- Current page: 71 of 189
- Download datasheet (2Mb)
Figure 11-13 and Figure 11-14 show Master-transmit-
ter and Master-receiver data transfer sequences.
When a master does not wish to relinquish the bus (by
generating a STOP condition), a repeated START con-
dition (Sr) must be generated. This condition is identical
to the start condition (SDA goes high-to-low while SCL
FIGURE 11-13: MASTER-TRANSMITTER SEQUENCE
FIGURE 11-14: MASTER-RECEIVER SEQUENCE
FIGURE 11-15: COMBINED FORMAT
Sr
A master reads a slave immediately after the first byte.
Transfer direction of data and acknowledgment bits depends on R/W bits.
Combined format - A master addresses a slave with a 10-bit address, then transmits
1997 Microchip Technology Inc.
For 7-bit address:
Combined format:
A master transmitter addresses a slave receiver with a
7-bit address. The transfer direction is not changed.
S
S
For 7-bit address:
Slave Address
S
From slave to master
From master to slave
Slave Address R/W A Data A Data A P
Slave Address R/W A Data A/A Sr
From slave to master
From master to slave
First 7 bits
Slave Address R/W A Data A Data A/A P
From slave to master
From master to slave
'1' (read)
'0' (write)
(write)
(read)
R/W A
data to this slave and reads data from this slave.
(n bytes - acknowledge)
(n bytes - acknowledge)
Slave Address
Second byte
data transferred
data transferred
A = acknowledge (SDA low)
A = not acknowledge (SDA high)
S = Start Condition
P = Stop Condition
A = acknowledge (SDA low)
A = not acknowledge (SDA high)
S = Start Condition
P = Stop Condition
Sr = repeated
Start Condition
A = acknowledge (SDA low)
A = not acknowledge (SDA high)
S = Start Condition
P = Stop Condition
(n bytes + acknowledge)
(read or write)
Slave Address R/W A Data A/A
A
Data
A
(write)
Data A/A
For 10-bit address:
S
is high), but occurs after a data transfer acknowledge
pulse (not the bus-free state). This allows a master to
send “commands” to the slave and then receive the
requested information or to address a different slave
device. This sequence is shown in Figure 11-15.
For 10-bit address:
S
Slave Address
Direction of transfer
may change at this point
Slave Address
First 7 bits
A master transmitter addresses a slave receiver
First 7 bits
with a 10-bit address.
Sr Slave Address
A master transmitter addresses a slave receiver
with a 10-bit address.
Sr
Slave Address
(write)
Data A
First 7 bits
(write)
First 7 bits
P
R/W A1 Slave Address
R/W A1 Slave Address
(read)
(read)
Data
R/W A Data A
R/W A3
PIC16C9XX
Second byte
Second byte
A/A
P
Data A
DS30444E - page 71
A2
A2
Data
Data
A
A P
P
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