OM13005,598 NXP Semiconductors, OM13005,598 Datasheet - Page 201
![BOARD EVAL EM773 METER US PLUG](/photos/38/74/387430/om13005_sml.jpg)
OM13005,598
Manufacturer Part Number
OM13005,598
Description
BOARD EVAL EM773 METER US PLUG
Manufacturer
NXP Semiconductors
Type
Other Power Managementr
Specifications of OM13005,598
Design Resources
Plug Meter Schematics, Gerber Files USB Dongle Schematics, Gerber Files
Main Purpose
Power Management, Energy/Power Meter
Embedded
Yes, MCU, 32-Bit
Utilized Ic / Part
EM773FHN33,551
Interface Type
USB
Maximum Operating Temperature
+ 150 C
Operating Supply Voltage
1.8 V to 3.6 V
Product
Power Management Development Tools
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Primary Attributes
-
Secondary Attributes
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
EM773, OL2381
Other names
568-6680
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18.1 Features
18.2 General description
UM10415
User manual
18.2.1 Boot loader
18.2.2 Memory map after any reset
The boot loader controls initial operation after reset and also provides the means to
accomplish programming of the flash memory via UART. This could be initial
programming of a blank device, erasure and re-programming of a previously programmed
device, or programming of the flash memory by the application program in a running
system.
The boot loader code is executed every time the part is powered on or reset. The loader
can execute the ISP command handler or the user application code. A LOW level after
reset at the PIO0_1 pin is considered as an external hardware request to start the ISP
command handler via UART.
Assuming that power supply pins are on their nominal levels when the rising edge on
RESET pin is generated, it may take up to 3 ms before PIO0_1 is sampled and the
decision on whether to continue with user code or ISP handler is made. If PIO0_1 is
sampled low and the watchdog overflow flag is set, the external hardware request to start
the ISP command handler is ignored. If there is no request for the ISP command handler
execution (PIO0_1 is sampled HIGH after reset), a search is made for a valid user
program. If a valid user program is found then the execution control is transferred to it. If a
valid user program is not found, the auto-baud routine is invoked.
Remark: The sampling of pin PIO0_1 can be disabled through programming flash
location 0x0000 02FC (see
The boot block is 16 kB in size. The boot block is located in the memory region starting
from the address 0x1FFF 0000. The boot loader is designed to run from this memory
area, but both the ISP and IAP software use parts of the on-chip RAM. The RAM usage is
described later in this chapter. The interrupt vectors residing in the boot block of the
on-chip flash memory also become active after reset, i.e., the bottom 512 bytes of the
boot block are also visible in the memory region starting from the address 0x0000 0000.
•
•
•
•
UM10415
Chapter 18: EM773 Flash memory programming firmware
Rev. 1 — 10 September 2010
In-System Programming: In-System programming (ISP) is programming or
reprogramming the on-chip flash memory, using the boot loader software and UART
serial port. This can be done when the part resides in the end-user board.
In-Application Programming: In-Application (IAP) programming is performing erase
and write operation on the on-chip flash memory, as directed by the end-user
application code.
Flash access times can be configured through a register in the flash controller block.
Erase time for one sector is 100 ms ± 5%. Programming time for one block of 256
bytes is 1 ms ± 5%.
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 10 September 2010
Section
18.2.7.1).
© NXP B.V. 2010. All rights reserved.
User manual
201 of 310
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