Cypress CY14B101P Especificações descarregar pdf (Página 3)

CY14B101P

Document Number: 001-44109 Rev. *O Page 3 of 36

Pinout

Figure 1. 16-pin SOIC pinout

INT

CAP

SCK

HSB

HOLD

Top Vi e w

not to scale

RTCbat

out

RTCcap

Pin Definitions

Pin Name I/O Type Description

Input Chip select. Activates the device when pulled LOW. Driving this pin HIGH puts the device in low power

standby mode.

SCK Input Serial clock. Runs at speeds up to maximum of f

SCK

. Serial input is latched at the rising edge of this

clock. Serial output is driven at the falling edge of the clock.

SI Input Serial input. Pin for input of all SPI instructions and data.

SO Output Serial output. Pin for output of data through SPI.

Input Write protect. Implements hardware write protection in SPI.

HOLD

Input HOLD pin. Suspends serial operation.

HSB

Input/Output Hardware STORE busy:

Output: Indicates busy status of nvSRAM when LOW. After each Hardware and Software STORE

operation, HSB

is driven HIGH for a short time (t

HHHD

) with standard output high current and then a

weak internal pull-up resistor keeps this pin HIGH (External pull-up resistor connection optional).

Input: Hardware STORE implemented by pulling this pin LOW externally.

CAP

Power supply AutoStore Capacitor. Supplies power to the nvSRAM during power loss to STORE data from the SRAM

to nonvolatile elements. If AutoStore is not needed, this pin must be left as No connect. It must never be

connected to ground.

RTCcap

[1]

Power supply Capacitor backup for RTC. Left unconnected if V

RTCbat

is used.

RTCbat

[1]

Power supply Battery backup for RTC. Left unconnected if V

RTCcap

is used.

Xout

[1]

Output Crystal output connection. Drives crystal on start up.

Xin

[1]

Input Crystal input connection. For 32.768 kHz crystal.

INT

[1]

Output Interrupt output. Programmable to respond to the clock alarm, the watchdog timer, and the power

monitor. Also programmable to either active HIGH (push or pull) or LOW (open drain).

NC No connect No connect. This pin is not connected to the die.

Power supply Ground

Power supply Power Supply (2.7 V–3.6 V)

Note

1. Left unconnected if RTC feature is not used

Not Recommended for New Designs

1 2 3 4 5 6 7 8 ... 36 37

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