LPC2388FBD144,551 NXP Semiconductors, LPC2388FBD144,551 Datasheet - Page 63

• Manufacturer Part Number: LPC2388FBD144,551
• Description: IC ARM7 MCU FLASH 512K 144LQFP
• Manufacturer: NXP Semiconductors
• Series: LPC2300r

Specifications of LPC2388FBD144,551

• Program Memory Type: FLASH
• Program Memory Size: 512KB (512K x 8)
• Package / Case: 144-LQFP
• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 72MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, Microwire, MMC, SPI, SSI, SSP, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
• Number Of I /o: 104
• Ram Size: 98K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: LPC23
• Core: ARM7TDMI-S
• Data Bus Width: 16 bit, 32 bit
• Data Ram Size: 98 KB
• Interface Type: CAN/I2C/I2S/SPI/SSP/UART/USB
• Maximum Clock Frequency: 72 MHz
• Number Of Programmable I/os: 104
• Number Of Timers: 4
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2, MCB2388, MCB2388U, MCB2388UME
• Development Tools By Supplier: OM11012
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• On-chip Dac: 1-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: OM11012 - BOARD EVAL FOR LPC2388568-3999 - BOARD EVAL FOR LPC23 ARM MCU622-1005 - USB IN-CIRCUIT PROG ARM7 LPC2K
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-4323; 935285417551; LPC2388FBD144-S

NXP Semiconductors
LPC2388
Product data sheet
14.3 RTC 32 kHz oscillator component selection
Table 16.
The RTC external oscillator circuit is shown in
integrated on chip, only a crystal, the capacitances C
externally to the microcontroller.
Table 17
capacitance of the crystal and is usually specified by the crystal manufacturer. The actual
C
different load capacitance, the circuit will oscillate at a slightly different frequency
(depending on the quality of the crystal) compared to the specified one. Therefore for an
accurate time reference it is advised to use the load capacitors as specified in Table
Table 17
specified in this table are calculated from the internal parasitic capacitances and the C
Parasitics from PCB and package are not taken into account.
Table 17.
Fundamental oscillation
frequency F
15 MHz to 20 MHz
20 MHz to 25 MHz
Crystal load capacitance
C
11 pF
13 pF
15 pF
Fig 27. RTC oscillator modes and models: oscillation mode of operation and external
L
L
influences oscillation frequency. When using a crystal that is manufactured for a
gives the crystal parameters that should be used. C
that belong to a specific C
crystal model used for C
Recommended values for C
components parameters): high frequency mode
Recommended values for the RTC external 32 kHz oscillator C
OSC
All information provided in this document is subject to legal disclaimers.
RTCX1
C X1
LPC2xxx
32 kHz XTAL
Rev. 2 — 13 July 2010
Maximum crystal series
resistance R
< 100 k
< 100 k
< 100 k
Crystal load
capacitance C
10 pF
20 pF
10 pF
20 pF
RTCX2
C X2
X1
/C
L
. The value of external capacitances C
X2
X1
S
/C
evaluation
L
X2
in oscillation mode (crystal and external
Maximum crystal
series resistance R
< 180 
< 100 
< 160 
< 80 
Figure
Single-chip 16-bit/32-bit microcontroller
X1
=
27. Since the feedback resistance is
External load capacitors C
18 pF, 18 pF
22 pF, 22 pF
27 pF, 27 pF
and C
L
X2
is the typical load
S
need to be connected
L
C L
R S
External load
capacitors C
18 pF, 18 pF
39 pF, 39 pF
18 pF, 18 pF
39 pF, 39 pF
002aaf495
LPC2388
© NXP B.V. 2010. All rights reserved.
X1
C P
/C
X1
X2
and C
components
X1
X1
,
/C
63 of 72
CX2
X2
X2
L
.