PIC16F636-I/P Microchip Technology Inc., PIC16F636-I/P Datasheet - Page 103
PIC16F636-I/P
Manufacturer Part Number
PIC16F636-I/P
Description
14 PIN, 3.5 KB FLASH, 128 RAM, 12 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F636-IP.pdf
(196 pages)
Specifications of PIC16F636-I/P
Comparators
2
Cpu Speed
5 MIPS
Eeprom Memory
256 Bytes
Input Output
12
Memory Type
Flash
Number Of Bits
8
Package Type
14-pin PDIP
Programmable Memory
3.5K Bytes
Ram Size
128 Bytes
Speed
20 MHz
Timers
1-8-bit, 1-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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FIGURE 11-17:
© 2005 Microchip Technology Inc.
LFDATA/RSSI/
MCU SPI Write Details:
1.
2.
3.
4.
5.
6.
7.
CCLK/SDIO
ALERT
SCLK/
Drive the AFE’s open collector ALERT output low.
•
Drop CS.
•
•
Change LFDATA/RSSI/CCLK/SDIO connected pin to output.
•
Clock in 16-bit SPI Write sequence - command, address, data and parity bit.
•
Change LFDATA/RSSI/CCLK/SDIO connected pin to input.
Raise CS to complete the SPI Write.
Change SCLK/ALERT back to input.
CS
to ensure no false clocks occur when CS drops
AFE SCLK/ALERT becomes SCLK input
LFDATA/RSSI/CCLK/SDIO becomes SDI input
driving SPI data
command, address, data and parity bit
(output)
ALERT
LFDATA
(output)
1
SPI WRITE SEQUENCE
(input)
2
SCLK
(input)
T
CSSC
SDI
T
3
SU
MSb
T
HD
4
16 Clocks for Write Command, Address and Data
PIC12F635/PIC16F636/639
Preliminary
T
HI
1/F
SCLK
T
LO
LSb
T
SCCS
5
6
T
LFDATA
(output)
CS
1
(output)
ALERT
DS41232B-page 101
T
7
CSH
T
CS
0
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