CY2040 Datasheet, PDF (1/7 Pages) Cypress Semiconductor – 32 kHz and 24 MHz Clock Generator with Precision 32 kHz Input

CY2040-2/3
32 kHz and 24 MHz Clock Generator with Precision 32 kHz Input
Features
• Precision RTC 32 kHz and 24 MHz output
• Power-down mode (32 kHz on) is < 50 uA
• Suspend mode (V24M = off) is typically 5 uA
• Low RMS period Jitter (< 40 ps)
• 16-pin TSSOP package
• 3.3V + 5% Voltage Supply
• CY2040-2 multiplier 32.000 kHz × 750 = 24.0 MHz
(requires a single 32.000 kHz crystal)
• CY2040-3 enables the 32 kHz and 24.0 MHz oscillators
(requires a 32.768 kHz and 24.000 MHz crystal)
Logic Block Diagram
XIN32K
XOUT32K
32kHz
OSC
Q=INPUT
DIVIDER
PLL
POST
DIVIDER
P=FEEDBACK
DIVIDER
XIN24M
XOUT24M
PD24M#
32KPLLEN
24MHz
OSC
CONTROL LOGIC
Pin Configuration
OUT32K
NC
1
32K P LLE N
2
P D24M #
3
V32K
4
V24M
5
XIN 32K
6
XO U T32K
7
NC
8
OUT24M
16
VSS
15
O U T24M
14 OUT32KPLL
13
O U T32K
12
XO U T24M
11
XIN 24M
10
VSS
9
NC
OUT32KPLL
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
Document #: 38-07122 Rev. *A
December 14, 2002