CY14B101P Ver la hoja de datos (PDF) - Cypress Semiconductor
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CY14B101P Datasheet PDF : 33 Pages
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PRELIMINARY
CY14B101P
Pinouts
Figure 1. Pin Diagram - 16-Pin SOIC
NC 1
VRTCbat 2
Xout 3
Xin 4
WP 5
HOLD 6
VRTCcap 7
GND 8
16 VCC
15 INT
14
Top View 13
not to scale
12
VCAP
SO
SI
11 SCK
10 CS
9 HSB
Table 1. Pin Definitions
Pin Name
CS
SCK
SI
SO
WP
HOLD
HSB
VCAP
VRTCcap
VRTCbat
Xout
Xin
INT
NC
GND
VCC
I/O Type
Input
Input
Input
Output
Input
Input
Input/Output
Power Supply
Power Supply
Power Supply
Output
Input
Output
No Connect
Power Supply
Power Supply
Description
Chip Select. Activates the device when pulled LOW. Driving this pin HIGH puts the device in low
power standby mode.
Serial Clock. Runs at speeds up to a maximum of 25 MHz. All inputs are latched at the rising edge
of this clock. Outputs are driven at the falling edge of the clock.
Serial Input. Pin for input of all SPI instructions and data.
Serial Output. Pin for output of data through SPI.
Write Protect. Implements hardware write protection in SPI.
HOLD Pin. Suspends Serial Operation.
Hardware Store Busy: A weak internal pull up keeps this pin pulled HIGH. If not used, this pin is
left as No Connect.
Output: Indicates busy status of nvSRAM when LOW.
Input: Hardware Store implemented by pulling this pin LOW externally.
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 GND.
Capacitor Backup for RTC. Left unconnected if VRTCbat is used.
Battery Backup for RTC. Left unconnected if VRTCcap is used.
Crystal Output connection. Drives crystal on start up.
Crystal Input connection. For 32.768 kHz crystal.
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).
No Connect. This pin is not connected to the die.
Ground
Power Supply (2.7-3.6V)
Document #: 001-44109 Rev. *C
Page 2 of 33
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