LPC2294JBD144,551 NXP Semiconductors, LPC2294JBD144,551 Datasheet - Page 27
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LPC2294JBD144,551
Manufacturer Part Number
LPC2294JBD144,551
Description
IC ARM7 MCU FLASH 256K 144-LQFP
Manufacturer
NXP Semiconductors
Series
LPC2200r
Datasheet
1.LPC2292FBD144015.pdf
(53 pages)
Specifications of LPC2294JBD144,551
Core Processor
ARM7
Core Size
16/32-Bit
Speed
60MHz
Connectivity
CAN, EBI/EMI, I²C, Microwire, SPI, SSI, SSP, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
112
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
144-LQFP
For Use With
OM10091 - KIT DEV PHYCORE-ARM7/LPC2220568-1757 - BOARD EVAL FOR LPC220X ARM MCU
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
568-1898
935275728551
LPC2294JBD144-S
935275728551
LPC2294JBD144-S
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LPC2294JBD144,551
Manufacturer:
NXP Semiconductors
Quantity:
10 000
NXP Semiconductors
LPC2292_2294_7
Product data sheet
6.19.7 Power control
6.19.8 APB bus
6.20.1 EmbeddedICE
6.20 Emulation and debugging
The LPC2292/LPC2294 support two reduced power modes: Idle mode and Power-down
mode. In Idle mode, execution of instructions is suspended until either a reset or interrupt
occurs. Peripheral functions continue operation during Idle mode and may generate
interrupts to cause the processor to resume execution. Idle mode eliminates power used
by the processor itself, memory systems and related controllers, and internal buses.
In Power-down mode, the oscillator is shut down, and the chip receives no internal clocks.
The processor state and registers, peripheral registers, and internal SRAM values are
preserved throughout Power-down mode, and the logic levels of chip output pins remain
static. The Power-down mode can be terminated and normal operation resumed by either
a reset or certain specific interrupts that are able to function without clocks. Since all
dynamic operation of the chip is suspended, Power-down mode reduces chip power
consumption to nearly zero.
A Power Control for Peripherals feature allows individual peripherals to be turned off if
they are not needed in the application, resulting in additional power savings.
The APB divider determines the relationship between the processor clock (CCLK) and the
clock used by peripheral devices (PCLK). The APB divider serves two purposes. The first
is to provide peripherals with the desired PCLK via APB bus so that they can operate at
the speed chosen for the ARM processor. In order to achieve this, the APB bus may be
slowed down to
properly at power-up (and its timing cannot be altered if it does not work since the APB
divider control registers reside on the APB bus), the default condition at reset is for the
APB bus to run at
is to allow power savings when an application does not require any peripherals to run at
the full processor rate. Because the APB divider is connected to the PLL output, the PLL
remains active (if it was running) during Idle mode.
The LPC2292/LPC2294 support emulation and debugging via a JTAG serial port. A trace
port allows tracing program execution. Debugging and trace functions are multiplexed only
with GPIOs on Port 1. This means that all communication, timer and interface peripherals
residing on Port 0 are available during the development and debugging phase as they are
when the application is run in the embedded system itself.
Standard ARM EmbeddedICE logic provides on-chip debug support. The debugging of
the target system requires a host computer running the debugger software and an
EmbeddedICE protocol converter. EmbeddedICE protocol converter converts the remote
debug protocol commands to the JTAG data needed to access the ARM core.
The ARM core has a Debug Communication Channel function built-in. The debug
communication channel allows a program running on the target to communicate with the
host debugger or another separate host without stopping the program flow or even
entering the debug state. The debug communication channel is accessed as a
co-processor 14 by the program running on the ARM7TDMI-S core. The debug
1
2
1
to
4
of the processor clock rate. The second purpose of the APB divider
1
Rev. 7 — 4 December 2008
16/32-bit ARM microcontrollers with external memory interface
4
of the processor clock rate. Because the APB bus must work
LPC2292/LPC2294
© NXP B.V. 2008. All rights reserved.
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