CY14V101PS Datasheet, PDF (4/67 Pages) Cypress Semiconductor – 1-Mbit (128K × 8) Quad SPI nvSRAM with Real Time Clock

CY14V101PS
Pinout
Pin Definitions
Pin Name
NC (I/O3)
V_CCQ
V_CC
CS
SO (I/O1)
WP (I/O2)
V_SS
HSB
V_CAP
V_RTCbat
Xout
Xin
Figure 1. 16-pin SOIC Pinout
NC (I/O3) ₁
VCC 2
VRTCBAT 3
XOUT 4
XIN
5
RFU 6
CS
7
SO (I/O1) 8
16
15
16- pin
14
SOIC
13
12
Top View ₁₁
10
9
SCK
SI (I/O0)
VCCQ
VCAP
HSB
INT/ SDQW
VSS
WP (I/O2)
Input
I/O Type
Input/Output
Power Supply
Power Supply
Input
Output
Input/Output
Input
Input/Output
Ground
Input/Output
Power Supply
Power supply
Output
Input
Description
Not connected. In Single or Dual mode, this pin is not connected and left
floating. These two modes do not support QSPI instructions.
I/O3: When the part is in Quad mode, the NC (I/O3) pin becomes I/O3 pin
and acts as input/output.
In Quad mode supporting SPI/DPI instructions, this pin needs to be tri-stated
while CS is enabled.
Power supply for the I/Os of the device.
Power supply to the core of the device.
Chip Select. Activates the device when pulled LOW. Driving this pin HIGH
puts the device in standby state.
Serial Output. Pin for output of data through SPI.
I/O1: When the part is in dual or quad mode, the SO (I/O1) pin becomes
I/O1 pin and acts as input/output.
Write Protect. Implements hardware write-protection in SPI/DPI modes.
I/O2: When the part is in quad mode, the WP (I/O2) pin becomes an I/O2
pin and acts as input/output.
Power supply ground to the core and I/Os of the device.
Hardware STORE Busy:
Output: Indicates the 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 is
optional).
Input: Hardware STORE can be initiated 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
ground.
Battery backup for RTC.
Crystal output connection. Left unconnected if RTC feature is not used.
Crystal input connection. Left unconnected if RTC feature is not used.
Document Number: 001-94176 Rev. *I
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