uc1602i-pp-m ETC-unknow, uc1602i-pp-m Datasheet - Page 19

• Manufacturer Part Number: uc1602i-pp-m
• Description: Single-chip, Ultra-low Power Passive Matrix Lcd Controller-driver
• Manufacturer: ETC-unknow

D
D
The display data is one bit per pixel and stored in
a dual port static RAM (RAM, for Display Data
RAM). The RAM size is 65x102. This array of
data bits are further organized into pages of 8 bit
slices to facilitate parallel bus interface.
At the end of the graphics data, UC1602I
contains an 1-bit wide page for icon data.
When Mirror X (MX, LC[2]) is OFF, the 1
of LCD pixels will correspond to the bits of the
first byte of each page, the 2
pixels correspond to the bits of the second byte
of each page, etc.
MSB F
There are two options to map D[7:0] to RAM,
MSB first (MSF=1), or LSB first (MSF=0), as
illustrated below.
D
The memory used in UC1602I Display Data RAM
(RAM) is a special purpose two port SRAM which
allows asynchronous access to both its column
and row data. Thus, RAM can be independently
Rev. 0.54 10/12/2001
ATA
ISPLAY
ISPLAY
O
IRST OR
RGANIZATION
D
ATA
D
ATA
RAM A
LSB F
RAM
IRST
CCESS
nd
column of LCD
st
column
accessed both for Host Interface and for display
operations.
D
A Host Interface (HI) memory access operation
starts with specifying Page Address (PA) and
Column Address (CA) by issuing Set Page
Address and Set Column Address commands.
If wrap-around (WA, AC[0]) is OFF (0), CA will
stop incrementing after reaching the end of page
(102), and system programmers need to set the
values of PA and CA explicitly.
If WA is ON (1), after CA has reached the end of
page (CA=101), CA will be rest to 0 and PA will
increment or decrement, depending on the
setting of Page Increment Direction (PID, AC[2]).
When PA reaches the boundary of RAM (i.e. PA
= 0 or 7), PA will be wrapped around to the other
end of RAM and continue.
I
The Icon Page is addressed by explicitly setting
PA to 8 (the 9
page, auto wrap-around will be suspended and
CA will stop when CA reaches 102.
CON
ISPLAY
D
ATA
D
ATA
A
DDRESSING
RAM A
th
page). When addressing Icon
65x102 Matrix LCD Controller-Drivers
DDRESSING
UC1602I
17