CRT9053-9153 datasheet


STANDARD MICROSYSTEMS CORPORATION

EVTLC
Enhanced Video Terminal Logic Controller


PIN CONFIGURATION

DA8 <-- 1   CRT9x53   40 --> DA7
DA9 <-- 2 39 --> DA6
DA10 <-- 3 38 --> DA5
GND --- 4 37 --> DA4
XTAL2 <-- 5 36 --> DA3
XTAL1 --> 6 35 --> DA2
VIDEO <-- 7 34 --> DA1
INTOUT <-- 8 33 --> DA0
DWR <-- 9 32 <-> DB7
DD0 <-> 10 31 <-> DB6
DD1 <-> 11 30 <-> DB5
DD2 <-> 12 29 <-> DB4
DD3 <-> 13 28 <-> DB3
DD4 <-> 14 27 <-> DB2
DD5 <-> 15 26 <-> DB1
DD6 <-> 16 25 <-> DB0
DD7 <-> 17 24 <-- A/D
HSYNC <-- 18 23 <-- RDDS
VSYNC <-- 19 22 <-- WRR/W
CSYN <-- 20 21 <-- VCC
  CRT
9053
CRT
9153

FEATURES


GENERAL DESCRIPTION

The CRT 9053 EVTLC and CRT 9153 EVTLC are mask-programmable 40-pin COPLAMOS® n-channel MOS/LSI Video Display Controller Chips that combine video timing, video attributes, alphanumeric and graphics generation, smooth scroll and screen buffer interface functions.

The EVTLC incorporates many of the features (previously requiring a number of external components) required in building a low cost yet versatile display interface. An internal mask programmable 128 character font provides for a full ASCII character set. Wide graphics allow plotting and graphing capabilities while thin graphics and visual attributes can make the display of forms straight-forward.

Two pinout configurations enhance the versatility of the EVTLC. The CRT 9053 controls data flow over the processor system data bus through separate read (RD) and write (WR) strobes for use with the 8085,8051, Z80®, 8086, and similar microprocessors or microcomputers. The CRT 9153 regulate the data flow with a data strobe (DS) and read/write (R/W) enable signals for use with the 6500, Z8™, 68000 and similar microprocessors or microcomputers.

The EVTLC provides two independent data buses; one bus that interfaces to the processor and one that interfaces to the display memory. Data is transferred to the display memory from the processor through the EVTLC eliminating contention problems and the need for a separate row buffer.

The EVTLC has an internal crystal oscillator requiring only an external crystal to operate. Masked constants for critical video timing simplify programming, operation and improve reliability. A separate non-scrolling status line (enabled or disabled by the processor) is available for displaying system status.

Z80 is a registered trademark of Zilog Corporation. Z8 is a trademark of Zilog Corporation.
















Circuit diagrams utilizing SMC products are included as a means of illustrating typical semiconductor applications: consequently complete information sufficient for construction purposes is not necessarily given. The information has been carefully checked and is believed to be entirely reliable. However, no responsibility is assumed for inaccuracies. Furthermore, such information does not convey to the purchaser of the semiconductor devices described any license under the patent rights of SMC or others. SMC reserves the right to make changes at any time in order to improve design and supply the best product possible.