at89lp214-20xi ATMEL Corporation, at89lp214-20xi Datasheet - Page 67
at89lp214-20xi
Manufacturer Part Number
at89lp214-20xi
Description
At89lp213 8-bit Microcontroller With 2k Bytes Flash
Manufacturer
ATMEL Corporation
Datasheet
1.AT89LP214-20XI.pdf
(89 pages)
- Current page: 67 of 89
- Download datasheet (3Mb)
23.3
3538B–MICRO–11/07
Command Format
Figure 23-2. AT89LP213/214 Memory Organization
Programming commands consist of an opcode byte, two address bytes, and zero or more data
bytes. In addition, all command packets must start with a two-byte preamble of AAH and 55H.
The preamble increases the noise immunity of the programming interface by making it more dif-
ficult to issue unintentional commands.
a command sequence.
A sample command packet is shown in
frame. SS must be brought low before the first byte in a command is sent and brought back high
after the final byte in the command has been sent. The command is not complete until SS
returns high. Command bytes are issued serially on MOSI. Data output bytes are received seri-
ally on MISO. Packets of variable length are supported by returning SS high when the final
required byte has been transmitted. In some cases command bytes have a don’t care value.
Don’t care bytes in the middle of a packet must be transmitted. Don’t care bytes at the end of a
packet may be ignored.
Page oriented instructions always include a full 16-bit address. The higher order bits select the
page and the lower order bits select the byte within that page. The AT89LP213/214 allocates
5 bits for byte address and 6 bits for page address. The page to be accessed is always fixed by
the page address as transmitted. The byte address specifies the starting address for the first
data byte. After each data byte has been transmitted, the byte address is incremented to point to
the next data byte. This allows a page command to linearly sweep the bytes within a page. If the
byte address is incremented past the last byte in the page, the byte address will roll over to the
first byte in the same page. While loading bytes into the page buffer, overwriting previously
loaded bytes will result in data corruption.
For a summary of available commands, see
Atmel Signature Array
User Signature Array
Code Memory
User Fuse Row
Figure 23-3 on page 68
Figure 23-4 on page
Table 23-2 on page
00
Page 63
Page 62
Page 0
Page 1
Page 0
Page 0
Page 1
Page 0
68. The SS pin defines the packet
shows a simplified flow chart of
69.
AT89LP213/214
1F
07FF
0000
67
Related parts for at89lp214-20xi
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet: