TMP88CS38 datasheet(147/226 Pages) TOSHIBA

147 / 226 page

TMP88CS38/CM38A/CP38A

2007-09-12

88CS38-147

(2) Display memory

Each character of the 384 characters displayed in 32 columns

× 12 lines consists of 16

bits in the display memory. Five data items are written to the display memory:

character code, color data, blinking specification, underline enable, and slant enable.

There are two modes for writing display data to the display memory. One mode is

used for writing all display data (Character code, color data, blinking specification,

underline enable, and slant enable) simultaneously. The other mode is used for

changing either character codes or the remaining data items (Color data, blinking

specification, underline enable, and slant enable). How to write display data to the

display memory is described in section 2.15.5.7 (1).

Note:

The display memory is in an unknown state at reset.

Display memory configuration

•

Character code specification register (9 bits)................ CRA8 to CRA0

•

Color data specification register (4 bits) ....................... IDT/RDT/GDT/BDT

•

Blinking specification register (1 bit) ............................ BLF

•

Underline enable register (1 bit).................................... EUL

•

Slant enable register (1 bit) ........................................... SLNT

SLNT

EUL

BLF

IDT

RDT

GDT

BDT

CRA8

CRA7

CRA6

CRA5

CRA4

CRA3

CRA2

CRA1

CRA0

Figure 2.15-3 Display Memory Bit Configuration

000 001 002 003 004 005 006 007 008 009 00A 00B 00C 00D 00E 00F 010 011 012 013 014 015 016 017 018 019 01A 01B 01C 01D 01E 01F

020 021 022 023 024 025 026 027 028 029 02A 02B 02C 02D 02E 02F 030 031 032 033 034 035 036 037 038 039 03A 03B 03C 03D 03E 03F

040

060

080

0A0

0C0

0E0

100

120

140

160

17F

Note:

Numerals in the table indicate (Hexadecimal) addresses in the display memory.

Figure 2.15-4 Display Memory Address Configuration

Column

Line

Character color specification register

Blinking specification register

Underline enable register

Slant enable register

Character code specification register

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