CTS9513API-2 datasheet(2/28 Pages) ETC

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Celeritous Technical Services Corp

800.687.6510 / 806.793.0708

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FAX

806.793.0710

Lubbock, Texas 79410

http://www.celeritous.com

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

Rev E

Tuesday, September 25,

CTS9513-2

5 Chan 16 bit 20MHz Counter/Timer

DEVICE DESCRIPTION

The CTS9513 is a custom, high speed ASIC

implementation of the AMD AM9513 System Timing

Controller. The ‘9513 has long been the most

versatile counter/timer peripheral device, featuring far

more flexibility than competing timing devices such

as the Intel 8253/8254, Motorola 6840 or others. A

large installed base of devices and software drivers

already exists.

The principal limitation of the AM9513 was its

maximum frequency limitation of 7 Mhz imposed by

its late 1970’s NMOS LSI design.

The CTS9513

shatters this barrier with a 20 MHz maximum clock

speed and much lower power consumption due to its

CMOS construction.

The CTS9513 Counter/Timer is capable of a wide

variety of applications including, but not limited to:

• Event Counting

• Event Sequencing

• Programmable pulse generation

• Programmable delay generation

• Frequency counting

• Frequency synthesis

• Real Time Clock

• Alarm Clock Functions

• Watchdog Timing

• Retriggerable Pulse Generation

• Non-Retriggerable Pulse Generation

• Waveform Analysis

• Interrupt Generation

• Pulse burst generation

The user has control over key features such as:

• Output Polarities

• Output Impedance

• Input Trigger, Edge Polarities

• Hardware gating/triggering

• Software gating/triggering

• Count Up/Down

• BCD/Binary Counting

• Real time count register read

• Internal counter concatenation (up to 80 bits)

• Programmable frequency source selection

• Programmable internal clock pre-scaling

FEATURES

BACKWARDS COMPATIBLE

The CTS9513 maintains backwards compatibility with

most AM9513 features, allowing continued use of

your

existing

software

drivers.

Data

may

transferred in 8 or 16 bit increments. All internal data

paths in the CTS9513 are 16 bit.

All ‘9513

commands registers and modes are supported.

PACKAGING

Figure 2 illustrates the DIP-40 Package pinout of the

device which conforms to the original AM9513

pinouts.

Table 2 summarizes the pinouts of the PLCC-44

package illustrated in Figure 3 which conform to the

original AM9513 PLCC pinouts.

SIGNALS

The following signal names and description conform

to the original AM9513 device.

VCC

+5 Volt Power Supply

VSS

Ground

The

CTS9513 does not provide an internal

crystal oscillator and must be driven from an

external source. X1 should be left open

X2 should be connected to an external TTL

source and pulled up to VCC

FOUT (Frequency Divider Outputs)

The FOUT line is generated by

internally

programmable counters. The clock source for

these counters may be any of the external

GATE or SOURCE inputs as well as any of

the internally prescaled clock outputs.

SOURCE1-5 (Count Source Inputs)

Source inputs 1-5 provide external clock

source lines which may be routed to any of

the internal counters or the FOUT divider. The

active

count

edge

for

the

source

programmed at the counter.

Symbol

Description

Min

Max

Units

V DD

DC Supply Voltage

-0.3

Volts

V IN

Input Voltage at Any Pin

-0.3

VDD+.3

Volts

T OP

Operating Temperature AxI

-40

o C

T ST

Storage Temperature

-55

150

o C

Table 1. Absolute Maximum Ratings

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