p89lpc9402 NXP Semiconductors, p89lpc9402 Datasheet - Page 6

• Manufacturer Part Number: p89lpc9402
• Description: 8-bit Microcontroller With Accelerated Two-clock 80c51 Core 8 Kb 3 V Byte-erasable ?ash With 32 Segment 4 Lcd Driver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
5. Functional diagram
P89LPC9402_1
Product data sheet
Fig 3.
SDA_LCD
SCL_LCD
SYNC
V
OSC
V
CLK
V
LCD
LCD display controller block diagram
DD
SS
OSCILLATOR
TIMING
FILTERS
GENERATOR
INPUT
Fig 4.
LCD BIAS
CLKOUT
KBI0
KBI1
KBI2
KBI3
KBI4
KBI5
KBI6
KBI7
P89LPC9402 functional diagram
BLINKER
POWER-
RESET
SELECTOR
ON
VOLTAGE
CONTROLLER
LCD
CMPREF
I
2
C-BUS
SA0
CIN2B
CIN2A
CIN1B
CIN1A
XTAL2
XTAL1
CMP2
CMP1
T1
Rev. 01 — 22 April 2009
BP0
CONTROLLER
8-bit microcontroller with accelerated two-clock 80C51 core
COMMAND
DECODER
DISPLAY
BACKPLANE
PORT 3
PORT 0
OUTPUTS
BP1 BP2 BP3
P89LPC9402
V
DD
DISPLAY SEGMENT OUTPUTS
SELECTOR
002aae472
INPUT
BANK
V
SS
SHIFT REGISTER
DISPLAY LATCH
S[31:0]
40
SCL
SDA
BP[0:3]
S[0:31]
POINTER
PORT 2
PORT 1
DISPLAY
DATA
RAM
P89LPC9402
4 BITS
TXD
RXD
T0
INT0
INT1
RST
MOSI
MISO
SPICLK
© NXP B.V. 2009. All rights reserved.
A0 A1 A2
SELECTOR
COUNTER
ADDRESS
OUTPUT
BANK
002aab470
SUB-
SCL
SDA
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