LPC2105FBD48/01,15 NXP Semiconductors, LPC2105FBD48/01,15 Datasheet - Page 19

• Manufacturer Part Number: LPC2105FBD48/01,15
• Description: IC ARM7 MCU FLASH 128K 48-LQFP
• Manufacturer: NXP Semiconductors
• Series: LPC2100r

Specifications of LPC2105FBD48/01,15

• Program Memory Type: FLASH
• Program Memory Size: 128KB (128K x 8)
• Package / Case: 48-LQFP
• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 60MHz
• Connectivity: I²C, Microwire, SPI, SSI, SSP, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: LPC21
• Core: ARM7TDMI-S
• Data Bus Width: 16 bit, 32 bit
• Data Ram Size: 32 KB
• Interface Type: I2C/SPI/UART
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2, KSK-LPC2106-PL
• Minimum Operating Temperature: - 40 C
• Package: 48LQFP
• Device Core: ARM7TDMI-S
• Family Name: LPC2000
• Maximum Speed: 60 MHz
• Operating Supply Voltage: 1.8|3.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 568-4310 - EVAL BOARD LPC2158 W/LCD568-4297 - BOARD EVAL LPC21XX MCB2100622-1005 - USB IN-CIRCUIT PROG ARM7 LPC2K568-1756 - BOARD EVAL FOR LPC210X ARM MCU
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-4366; 935286615151; LPC2105FBD48/01-S

NXP Semiconductors
LPC2104_2105_2106_7
Product data sheet
6.14.1 Features
6.14.2 Features available in LPC2104/2105/2106/01 only
6.15.1 Features
6.15 Watchdog timer
The LPC2104/2105/2106/01 can count external events on one of the capture inputs if the
external pulse lasts at least one half of the period of the PCLK. In this configuration,
unused capture lines can be selected as regular timer capture inputs or used as external
interrupts.
The purpose of the Watchdog is to reset the microcontroller within a reasonable amount of
time if it enters an erroneous state. When enabled, the Watchdog will generate a system
reset if the user program fails to ‘feed’ (or reload) the Watchdog within a predetermined
amount of time.
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A 32-bit Timer/Counter with a programmable 32-bit Prescaler.
Up to four (Timer 1) and three (Timer 0) 32-bit capture channels, that can take a
snapshot of the timer value when an input signal transitions. A capture event may also
optionally generate an interrupt.
Four 32-bit match registers that allow:
– Continuous operation with optional interrupt generation on match.
– Stop timer on match with optional interrupt generation.
– Reset timer on match with optional interrupt generation.
Up to four (Timer 1) and three (Timer 0) external outputs corresponding to match
registers, with the following capabilities:
– Set LOW on match.
– Set HIGH on match.
– Toggle on match.
– Do nothing on match.
Timer can count cycles of either the peripheral clock (PCLK) or an externally supplied
clock.
When counting cycles of an externally supplied clock, only one of the timer’s capture
inputs can be selected as the timer’s clock. The rate of such a clock is limited to
PCLK
than
Internally resets chip if not periodically reloaded.
Debug mode.
Enabled by software but requires a hardware reset or a watchdog reset/interrupt to be
disabled.
Incorrect/Incomplete feed sequence causes reset/interrupt if enabled.
Flag to indicate watchdog reset.
4
1
. Duration of HIGH/LOW levels on the selected CAP input cannot be shorter
(2PCLK)
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Rev. 07 — 20 June 2008
LPC2104/2105/2106
Single-chip 32-bit microcontrollers
© NXP B.V. 2008. All rights reserved.
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