CTS9513API-2 datasheet(23/28 Pages) ETC

23 / 28 page

Celeritous Technical Services Corp

800.687.6510 / 806.793.0708

3308 34th St

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

SOURCE

DATA

ARM COMMAND

GATE

COUNT VALUE

TC OUTPUT

TOGGLE OUTPUT

HOLD REG

L-1

L-2

...

N+1

N-1

N-2

K+2

K+1

K-1

L-1

L-2

COUNTER MODE X WAVEFORMS

Figure 28 - CTS9513 Counter Mode X Representative Waveforms

MODE X HARDWARE SAVE

Mode X is a hardware edge triggered strobe counter

with the capability of reading the counter value

without interrupting the count.

As shown in Figure 28, once the counter is ARMed a

valid gate edge starts the counter. Once triggered the

counter will count to TC regardless of the state of the

Gate line. Gate edges received prior to TC will store

the current count in the Hold register. Once the

counter has reached TC the counter will stop until a

subsequent gate edge is received. Gate edges

applied to an unarmed

counter have no effect.

Symbol

Specification

Min

Max

Units

V ILT

TTL Input LOW Level

0.8

Volts

V IHT

TTL Input HIGH Level

Volts

V ILC

X2 Input LOW Level

1.5

Volts

V IHC

X2 Input HIGH Level

V DD –1.5

Volts

V OL

Output LOW Level @ I OL = 4mA

0.4

Volts

V OH

Output HIGH Level @ I OL =4mA

2.4

Volts

I Z

Input Leakage Current

-10

µA

I DD

Supply Current /No Load / F OSC = 7MHz

I DDS

IDD Static

µA

C IN

Pin Capacitance

Table 12 - CTS9513 Electrical Characteristics

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