DV164101 Microchip Technology, DV164101 Datasheet - Page 33

• Manufacturer Part Number: DV164101
• Description: KIT DEV PICKIT1 FLASH 8/14PIN
• Manufacturer: Microchip Technology
• Series: PICkit™ 1r
• Type: MCUr

Specifications of DV164101

• Contents: PIC Kit 1 Circuit Board, CD-ROMs, USB Interface Cable and Booklet
• Processor To Be Evaluated: PIC12F675
• Interface Type: USB
• Silicon Manufacturer: Microchip
• Core Architecture: PIC
• Core Sub-architecture: PIC12, PIC16
• Silicon Core Number: PIC12F, PIC16F
• Silicon Family Name: PIC12F6xx, PIC16F6xx
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: Microchip's 8-14 Pin FLASH Microcontrollers
• For Use With: AC164122 - BOARD DAUGHT PICTAIL SD/MMC CARDAC164120 - BOARD SIGNAL ANALYSIS PICKIT
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: DV164101R; DV164101R

A.5
 2004 Microchip Technology Inc.
USB COMMUNICATIONS PROTOCOL
The USB protocol used by the PICkit 1 Flash Starter Kit is a very simple
command/response type protocol. Multiple commands can be put together to fill the 8
bytes of a USB packet. If a command cannot fill the 8 bytes and it is not desired to use
a second command to fill the packet, the packet should be padded with ‘Z’ to indicate
no operation.
A.5.1
• ‘C’ <word> – Configuration Memory Write mode. Word parameter ignored. Use
• ‘c’ – Download Command Table. 15 bytes to follow (two 8 byte packets) containing
• ‘D’ <byte> – Write EE Data memory. Data is passed as the byte.
• ‘E’ – Bulk Erase Program memory
• ‘e’ – Bulk Erase Data memory
• ‘g’ – Get n bytes from device (n is a word)
• ‘I’ <word> – Increment Address N times. N is passed as word.
• ‘P’ – Enter Programming mode. Turns V
• ‘p’ – Exit Programming mode. Turns V
• ‘R’ – Read Program memory. ‘R’ always returns 4 words. If the end of PGM
• ‘r’ – Read EE Data memory. ‘r’ always returns 8 bytes. If the end of Data memory
• ‘S’ <program memory length, data memory length> – Calculates Program
• ‘t’ – Transmit n bytes to device (n is a word)
• ‘V’ <byte> – Power and special feature control. The byte following command is
• ‘v’ – Return version information. The following bytes are returned:
• ‘W’ <word> – Write Program Memory. Loads the write latch, sends the write
The last 4 commands are undefined but the second data packet will be filled out.
‘W’ to write to configuration memory.
the 6-bit commands in the following order:
- Load Configuration memory
- Load data for Program memory
- Load data for EE Data memory
- Read data from Program memory
- Increment Address
- Begin programming (internally timed)
- Begin programming (externally timed)
- End programming (externally timed)
- Bulk Erase Program memory
- Bulk Erase EE Data memory
memory is reached, it pads with 0’s. It is the responsibility of the host software to
determine if padding occurred by keeping track of the program counter.
is reached, it pads with 0’s. It is the responsibility of the host software to determine
if padding occurred by keeping track of the program counter.
Memory Checksum and Data Memory Checksum. The checksum is calculated on
the first N
memory. N
value is 3 bytes in length: the first word is the Program Memory Checksum, and
the last byte is the Data Memory Checksum.
used to control. V
square wave.
<Major><Minor><Dot>.
command and increments to the next address.
Commands
p
p
words of the program memory and the first N
and N
DD
d
are both words passed as the length parameter. The return
power to the target and to enable/disable a 2.5 kHz 50%
DD
PP
and V
and V
PP
DD
off.
on.
d
bytes of the data
DS40051D-page 29