p89lpc9401 NXP Semiconductors, p89lpc9401 Datasheet - Page 6

• Manufacturer Part Number: p89lpc9401
• Description: 8-bit Microcontroller With Accelerated Two-clock 80c51 Core 8 Kb 3 V Byte-erasable Flash With 32 Segment X 4 Lcd Driver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
5. Functional diagram
P89LPC9401_1
Preliminary data sheet
Fig 3. LCD display controller block diagram
SYNC
V
OSC
SDA
CLK
SCL
V
V
LCD
DD
SS
OSCILLATOR
TIMING
FILTERS
GENERATOR
INPUT
LCD BIAS
Fig 4. P89LPC9401 functional diagram
CLKOUT
KBI0
KBI1
KBI2
KBI3
KBI4
KBI5
KBI6
KBI7
BLINKER
POWER-
RESET
SELECTOR
ON
VOLTAGE
CONTROLLER
8-bit two-clock 80C51 microcontroller with 32 segment
LCD
I
2
CMPREF
C-BUS
SA0
CIN2B
CIN2A
CIN1B
CIN1A
XTAL2
XTAL1
CMP2
CMP1
Rev. 01 — 5 September 2005
T1
BP0
CONTROLLER
COMMAND
DECODER
DISPLAY
BACKPLANE
OUTPUTS
BP1 BP2 BP3
PORT 3
PORT 0
P89LPC9401
V
DD
DISPLAY SEGMENT OUTPUTS
SELECTOR
INPUT
BANK
002aab462
V
SS
SHIFT REGISTER
DISPLAY LATCH
S0 TO S39
40
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
POINTER
DISPLAY
SCL
SDA
BP[0:3]
S[0:31]
DATA
PORT 2
PORT 1
RAM
4 BITS
P89LPC9401
A0 A1 A2
SELECTOR
TXD
RXD
T0
INT0
INT1
RST
MOSI
MISO
SPICLK
COUNTER
ADDRESS
OUTPUT
BANK
002aab470
SUB-
4 LCD driver
SCL
SDA
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