P89LPC915HDH NXP Semiconductors, P89LPC915HDH Datasheet - Page 12

• Manufacturer Part Number: P89LPC915HDH
• Description: MCU 8BIT 80C51 2K FLASH, TSSOP14
• Manufacturer: NXP Semiconductors

Specifications of P89LPC915HDH

• Controller Family/series: (8051) 8052
• Core Size: 8bit
• No. Of I/o's: 14
• Program Memory Size: 2KB
• Ram Memory Size: 256Byte
• Cpu Speed: 18MHz
• Oscillator Type: Internal Only
• No. Of Timers: 4
• Digital Ic: RoHS Compliant

NXP Semiconductors
Table 4.
[1]
Table 5.
P89LPC915_916_917_5
Product data sheet
Symbol
P1.0/TXD
P1.1/RXD
P1.2/T0/SCL
P1.3/INT0/SDA
P1.4/INT1
P1.5/RST
V
V
Symbol
P0.0 to P0.5
SS
DD
Input/output for P1.0 to P1.4. Input for P1.5.
P89LPC915 pin description
P89LPC916 pin description
Pin
9
8
7
6
5
3
4
10
Pin
…continued
Type Description
I/O
O
I/O
I
I/O
I/O
I/O
I/O
I
I/O
I
I
I
I
I
I
Type Description
I/O
Rev. 05 — 15 December 2009
P1.0 — Port 1 bit 0.
TXD — Transmitter output for serial port.
P1.1 — Port 1 bit 1.
RXD — Receiver input for serial port.
P1.2 — Port 1 bit 2 (open-drain when used as output).
T0 — Timer/counter 0 external count input or overflow output (open-drain
when used as output).
SCL — I
P1.3 — Port 1 bit 3 (open-drain when used as output).
INT0 — External interrupt 0 input.
SDA — I
P1.4 — Port 1 bit 4.
INT1 — External interrupt 1 input.
P1.5 — Port 1 bit 5 (input only).
RST — External Reset input during power-on or if selected via UCFG1.
When functioning as a reset input, a LOW on this pin resets the
microcontroller, causing I/O ports and peripherals to take on their default
states, and the processor begins execution at address 0. Also used
during a power-on sequence to force ISP mode. When using an
oscillator frequency above 12 MHz, the reset input function of P1.5
must be enabled. An external circuit is required to hold the device in
reset at power-up until V
system power is removed V
operating voltage. When using an oscillator frequency above
12 MHz, in some applications, an external brownout detect circuit
may be required to hold the device in reset when V
minimum specified operating voltage.
Ground: 0 V reference.
Power supply: This is the power supply voltage for normal operation as
well as Idle and Power-down modes.
Port 0: Port 0 is an 6-bit I/O port with a user-configurable output type.
During reset Port 0 latches are configured in the input only mode with
the internal pull-up disabled. The operation of Port 0 pins as inputs and
outputs depends upon the port configuration selected. Each port pin is
configured independently. Refer to
and
The Keypad Interrupt feature operates with Port 0 pins.
All pins have Schmitt triggered inputs.
Port 0 also provides various special functions as described below:
8-bit microcontrollers with accelerated two-clock 80C51 core
Table 15 “Static characteristics”
2
2
C serial clock input/output.
C serial data input/output.
DD
P89LPC915/916/917
has reached its specified level. When
DD
will fall below the minimum specified
Section 8.13.1 “Port configurations”
for details.
© NXP B.V. 2009. All rights reserved.
DD
falls below the
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