CY2048WAF

AC Electrical Specifications[1] over the operating range, except as noted

 

 

 

 

Parameter[1]

 

 

Description

 

 

 

 

Condition

Min.

Typ.

Max.

Unit

FOUT

 

Output Frequency

 

 

 

 

 

0.625

–

48

MHz

DC

 

Output Duty Cycle

 

XTAL Buffered or Divided

45

50

55

%

 

 

 

 

 

 

 

 

 

 

 

 

 

TR

 

Rise Time

 

Output Clock Rise Time, Measured from 20% to

 

 

2.5

ns

 

 

 

 

 

 

80% of VDD, COUT = 15 pF.

 

 

 

 

TF

 

Fall Time

 

 

 

Output Clock Fall Time, Measured from 80% to

 

 

2.5

ns

 

 

 

 

 

 

20% of VDD, COUT = 15 pF.

 

 

 

 

tPJ1

 

RMS Period Jitter

 

XIN = 10–48 MHz. Measured at VDD/2

–

4

15

ps

tPJ2[2]

 

Peak-to-peak Period Jitter

 

XIN = 10–48 MHz. Measured at VDD/2

–

30

80

ps

DL

 

Crystal drive level

 

48-MHz crystal, CL = 7 pF, C0 = 2 pF,

 

350–400

 

∝W

 

 

 

 

 

 

R1 = 10 Ohms, Temp. = 25°C, VDD = 3.6V

 

 

 

 

–R

 

Negative Resistance

 

Measured at 48 MHz, CL = 10 pF, C0 = 5 pF

–

–

–150

Ω

FDRIFT

 

Output Frequency Drift

 

3.0V ± 10%, 3.3V ± 10% for Temp. = 25°C

–2

–

2

ppm

Phase Noise, Temp = 25°C, VDD = 3.3V,

 

 

 

 

FNOM = 10MHz, XCAP = 7F (Hex)

 

 

 

 

 

 

 

 

 

Offset

 

dBc/Hz (Typ)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10 Hz

 

 

–90

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100 Hz

 

 

–115

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 kHz

 

 

–130

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10 kHz

 

 

–140

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100 kHz

 

 

–140

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 MHz

 

 

–140

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Crystal Oscillator Tuning Capacitor Values

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Capacitor Bit

 

Capacitance (pF) per Side

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C7

 

 

5.000

 

 

 

 

 

 

 

 

C6

 

 

2.500

 

 

 

 

 

 

 

 

C5

 

 

1.250

 

 

 

 

 

 

 

 

C4

 

 

0.625

 

 

 

 

 

 

 

 

C3

 

 

0.313

 

 

 

 

 

 

 

 

C2

 

 

0.156

 

 

 

 

 

 

 

 

C1

 

 

0.078

 

 

 

 

 

 

 

 

C0

 

 

0.039

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XIN

 

 

 

XOUT

 

 

 

 

 

CXIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CXOUT

C7

C6

C5

C4

C3

C2

C1

C0

C0

C1

C2

C3

C4

C5

C6

C7

Figure 1. Programmable Load Capacitance

Notes:

2. TPJ2 measured using DTS-2075, # of events set to 10, 000.

Document #: 38-07738 Rev. *A

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Cypress CY2048WAF Phase Noise, Temp = 25C, V DD = NOM = 10MHz, X CAP = 7F Hex, Crystal Oscillator Tuning Capacitor Values
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CY2048WAF specifications

The Cypress CY2048WAF is a highly integrated, low-power, real-time clock (RTC) chip designed for a variety of applications that require accurate timekeeping and minimal power consumption. One of the standout features of the CY2048WAF is its ability to maintain precise time in battery-operated devices while operating at extremely low energy levels. This makes it an ideal choice for portable electronics, wearables, and IoT devices where battery life is a critical consideration.

At the heart of the CY2048WAF is its exceptional timekeeping accuracy, which is achieved through the use of a temperature-compensated crystal oscillator (TCXO). This oscillator ensures stability over a wide range of operating temperatures, resulting in long-term time accuracy and reliability. With an integrated power management system, the CY2048WAF can switch between different power modes, allowing it to conserve energy during periods of inactivity.

One of the key technologies integrated into the CY2048WAF is the I2C communication protocol, which simplifies the connection to microcontrollers and other digital systems. The ability to interface seamlessly with various devices makes the CY2048WAF a versatile choice for designers looking to incorporate precise timing functionality across different platforms.

The CY2048WAF also features a built-in alarm function, providing users with the ability to set alarms for various time intervals. This is particularly beneficial in applications where reminders or scheduled events are essential. Additionally, the device includes temperature sensors, enabling it to monitor ambient conditions and adapt its timekeeping functions accordingly.

Another noteworthy characteristic of the CY2048WAF is its compact package size, which allows for easier integration into space-constrained designs. With its low-profile form factor, the chip can be utilized in a variety of devices without significantly increasing the overall size or weight.

In conclusion, the Cypress CY2048WAF is an advanced RTC solution that combines accuracy, low power consumption, and a range of features that enhance its functionality in various applications. Its integration of cutting-edge technologies and thoughtful design make it an excellent choice for developers seeking reliable timekeeping solutions in portable and battery-operated devices.
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