P89LPC982FDH,529 NXP Semiconductors, P89LPC982FDH,529 Datasheet - Page 44

• Manufacturer Part Number: P89LPC982FDH,529
• Description: MCU 80C51 8KB FLASH 28TSSOP
• Manufacturer: NXP Semiconductors
• Series: LPC900r

Specifications of P89LPC982FDH,529

• Program Memory Type: FLASH
• Program Memory Size: 8KB (8K x 8)
• Package / Case: 28-TSSOP
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 18MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 26
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: P89LPC
• Core: 80C51
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: I2C, SPI, UART
• Maximum Clock Frequency: 18 MHz
• Number Of Programmable I/os: 23
• Number Of Timers: 5
• Operating Supply Voltage: 2.4 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 935290303529

NXP Semiconductors
P89LPC980_982_983_985
Product data sheet
7.19.3.1 Mode 3
7.19.3.2 Mode 6
7.19.1 Mode 0
7.19.2 Mode 1
7.19.3 Mode 2
7.19.4 Timer overflow toggle output
7.19 Timers/counters 0 and 1
7.20 Timers/counters 2, 3 and 4
The P89LPC980/982/983/985 has two general purpose counter/timers which are upward
compatible with the standard 80C51 Timer 0 and Timer 1. Both can be configured to
operate either as timers or event counters. An option to automatically toggle the T0 or T1
pins upon timer overflow has been added.
In the ‘Timer’ function, the register is incremented every machine cycle.
In the ‘Counter’ function, the register is incremented in response to a 1-to-0 transition at its
corresponding count input pin, T0 or T1. In this function, the count input is sampled once
during every machine cycle.
Timer 0 and Timer 1 have five operating modes (Modes 0, 1, 2, 3 and 6). Modes 0, 1, 2
and 6 are the same for both Timers/Counters. Mode 3 is different.
Putting either Timer into Mode 0 makes it look like an 8048 Timer, which is an 8-bit
Counter with a divide-by-32 prescaler. In this mode, the Timer register is configured as a
13-bit register. Mode 0 operation is the same for Timer 0 and Timer 1.
Mode 1 is the same as Mode 0, except that all 16 bits of the timer register are used.
Mode 2 configures the Timer register as an 8-bit Counter with automatic reload. Mode 2
operation is the same for Timer 0 and Timer 1.
When Timer 1 is in Mode 3 it is stopped. Timer 0 in Mode 3 forms two separate 8-bit
counters and is provided for applications that require an extra 8-bit timer. When Timer 1 is
in Mode 3 it can still be used by the serial port as a baud rate generator.
In this mode, the corresponding timer can be changed to a PWM with a full period of
256 timer clocks.
Timers 0 and 1 can be configured to automatically toggle a port output whenever a timer
overflow occurs. The same device pins that are used for the T0 and T1 count inputs are
also used for the timer toggle outputs. The port outputs will be a logic 1 prior to the first
timer overflow when this mode is turned on.
The P89LPC980/982/983/985 has three external 16-bit timer/counters. All can be
configured to operate either as timers or event counters. An option to automatically toggle
pin Tx (x = 2, 3 or 4) upon timer overflow has been added.
In the ‘Timer’ function, the register is incremented every PCLK.
Rev. 4 — 15 June 2010
8-bit microcontroller with accelerated two-clock 80C51 core
P89LPC980/982/983/985
© NXP B.V. 2010. All rights reserved.
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