LPC1857FET256,551 NXP Semiconductors, LPC1857FET256,551 Datasheet - Page 912
LPC1857FET256,551
Manufacturer Part Number
LPC1857FET256,551
Description
IC MCU 32BIT 1MB FLASH 256LBGA
Manufacturer
NXP Semiconductors
Series
LPC18xxr
Datasheets
1.LPC1830FET256551.pdf
(87 pages)
2.LPC1810FET100551.pdf
(2 pages)
3.LPC1810FET100551.pdf
(1164 pages)
Specifications of LPC1857FET256,551
Core Processor
ARM® Cortex-M3™
Core Size
32-Bit
Speed
150MHz
Connectivity
CAN, EBI/EMI, Ethernet, I²C, Microwire, SD/MMC, SPI, SSI, SSP, UART/USART, USB OTG
Peripherals
Brown-out Detect/Reset, DMA, I²S, LCD, Motor Control PWM, POR, PWM, WDT
Number Of I /o
80
Program Memory Size
1MB (1M x 8)
Program Memory Type
FLASH
Eeprom Size
-
Ram Size
136K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 3.6 V
Data Converters
A/D 16x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
256-LBGA
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
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Company:
Part Number:
LPC1857FET256,551
Manufacturer:
NXP Semiconductors
Quantity:
10 000
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User manual
40.4.2.1 ISP command format
40.4.2.2 ISP response format
40.4.2.3 ISP data format
40.4.2.4 ISP flow control
40.4.2.5 ISP command abort
40.4.2.6 Interrupts during IAP
40.4.2.7 RAM used by ISP command handler
40.4.2.8 RAM used by IAP command handler
"Command Parameter_0 Parameter_1 … Parameter_n<CR><LF>" "Data" (Data only for
Write commands).
"Return_Code<CR><LF>Response_0<CR><LF>Response_1<CR><LF> …
Response_n<CR><LF>" "Data" (Data only for Read commands).
The data stream is in UU-encoded format. The UU-encode algorithm converts 3 bytes of
binary data in to 4 bytes of printable ASCII character set. It is more efficient than Hex
format which converts 1 byte of binary data in to 2 bytes of ASCII hex. The sender should
send the check-sum after transmitting 20 UU-encoded lines. The length of any
UU-encoded line should not exceed 61 characters (bytes) i.e. it can hold 45 data bytes.
The receiver should compare it with the check-sum of the received bytes. If the
check-sum matches then the receiver should respond with "OK<CR><LF>" to continue
further transmission. If the check-sum does not match the receiver should respond with
"RESEND<CR><LF>". In response the sender should retransmit the bytes.
A software XON/XOFF flow control scheme is used to prevent data loss due to buffer
overrun. When the data arrives rapidly, the ASCII control character DC3 (0x13) is sent to
stop the flow of data. Data flow is resumed by sending the ASCII control character DC1
(0x11). The host should also support the same flow control scheme.
Commands can be aborted by sending the ASCII control character "ESC" (0x1B). This
feature is not documented as a command under "ISP Commands" section. Once the
escape code is received the ISP command handler waits for a new command.
The on-chip flash memory is not accessible during erase/write operations. When the user
application code starts executing the interrupt vectors from the user flash area are active.
The user should either disable interrupts, or ensure that user interrupt vectors are active in
RAM and that the interrupt handlers reside in RAM, before making a flash erase/write IAP
call. The IAP code does not use or disable interrupts.
ISP commands use on-chip RAM from 0x1000 0118 to 0x1000 01FF. The user could use
this area, but the contents may be lost upon reset. Flash programming commands use the
top 32 bytes of on-chip RAM. The stack is located at RAM top - 32. The maximum stack
usage is 256 bytes and grows downwards.
Flash programming commands use the top 32 bytes of on-chip RAM. The maximum stack
usage in the user allocated stack space is 128 bytes and grows downwards.
All information provided in this document is subject to legal disclaimers.
Rev. 00.13 — 20 July 2011
Chapter 40: LPC18xx flash programming interface
UM10430
© NXP B.V. 2011. All rights reserved.
912 of 1164
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