PIC16F74-I/PTG Microchip Technology, PIC16F74-I/PTG Datasheet - Page 259
![IC MCU FLASH 4KX14 44TQFP](/photos/6/82/68251/c04-076_pt_sml.jpg)
PIC16F74-I/PTG
Manufacturer Part Number
PIC16F74-I/PTG
Description
IC MCU FLASH 4KX14 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16F818-ISO.pdf
(6 pages)
4.PIC16F73-ISP.pdf
(174 pages)
5.PIC16F73-ISP.pdf
(14 pages)
6.PIC16F73-ISP.pdf
(12 pages)
Specifications of PIC16F74-I/PTG
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
33
Program Memory Size
7KB (4K x 14)
Program Memory Type
FLASH
Ram Size
192 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x8b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16F818-ISO PDF datasheet #3
- PIC16F73-ISP PDF datasheet #4
- PIC16F73-ISP PDF datasheet #5
- PIC16F73-ISP PDF datasheet #6
- Current page: 259 of 688
- Download datasheet (3Mb)
Section 16. BSSP
16
16.3.3
Typical Connection
Figure 16-2
shows a typical connection between two microcontrollers. The master controller
(Processor 1) initiates the data transfer by sending the SCK signal. Data is shifted out of both
shift registers on their programmed clock edge, and latched on the opposite edge of the clock.
Both processors should be programmed to same Clock Polarity (CKP), then both controllers
would send and receive data at the same time. Whether the data is meaningful (or dummy data)
depends on the application software. This leads to three scenarios for data transmission:
• Master sends data — Slave sends dummy data
• Master sends data — Slave sends data
• Master sends dummy data — Slave sends data
Figure 16-2: SPI Master/Slave Connection
SPI Master (SSPM3:SSPM0 = 00xxb)
SPI Slave (SSPM3:SSPM0 = 010xb)
SDO
SDI
Serial Input Buffer
Serial Input Buffer
(SSPBUF)
(SSPBUF)
SDI
SDO
Shift Register
Shift Register
(SSPSR)
(SSPSR)
LSb
MSb
MSb
LSb
Serial Clock
SCK
SCK
PROCESSOR 1
PROCESSOR 2
1997 Microchip Technology Inc.
DS31016A-page 16-9
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