Cypress Semiconductor CY7C1380C Manuel d'utilisateur télécharger pdf (Page 13)

PRELIMINARY

CY7C1380C

CY7C1382C

Document #: 38-05237 Rev. *B Page 13 of 28

TAP Controller Block Diagram

TAP Electrical Characteristics Over the Operating Range (3.135 ≤ V

≤ 3.63)

[8, 9]

Parameter Description Test Conditions Min. Max. Unit

OH1

Output HIGH Voltage I

= −4.0 mA V

DDQ

= 3.3V 2.4 V

OH2

Output HIGH Voltage I

= −100 µA V

DDQ

= 3.3V 2.9 V

OL1

Output LOW Voltage I

= 8.0 mA V

DDQ

= 3.3V 0.4 V

OL2

Output LOW Voltage I

= 100 µA V

DDQ

= 3.3V 0.2 V

Input HIGH Voltage V

DDQ

= 3.3V 2.0 V

+ 0.3 V

Input LOW Voltage V

DDQ

= 3.3V –0.5 0.7 V

Input Load Current GND ≤ V

≤ V

DDQ

–5 5 µA

TAP AC Switching Characteristics Over the Operating Range

[10, 11]

Parameters Description Min. Max. Unit

TCYC

TCK Clock Cycle Time 100 ns

TCK Clock Frequency 10 MHz

TCK Clock HIGH 40 ns

TCK Clock LOW 40 ns

Notes:

8. All Voltage referenced to Ground.

9. Overshoot: V

(AC) < V

+ 1.5V for t < t

TCYC

/2, undershoot:V

(AC) > −0.5V for t < t

TCYC

/2.

10. t

and t

refer to the set-up and hold time requirements of latching data from the boundary scan register.

11. Test conditions are specified using the load in TAP AC Test Conditions. t

= 1 V/ ns.

012..

3031

Boundary Scan Register

Identification Register

012..

012

Instruction Register

Bypass Register

Selection

Circuitry

Selection

Circuitry

TAP Controller

TDI

TDO

TCK

TMS

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 27 28

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Cypress Semiconductor CY7C1380C Manuel d'utilisateur Page 13

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