CY7C63833-LFXC Cypress Semiconductor Corp, CY7C63833-LFXC Datasheet - Page 25

• Manufacturer Part Number: CY7C63833-LFXC
• Description: IC USB PERIPHERAL CTRLR 32VQFN
• Manufacturer: Cypress Semiconductor Corp
• Series: CY7Cr

Specifications of CY7C63833-LFXC

• Controller Type: USB Peripheral Controller
• Interface: USB
• Voltage - Supply: 4 V ~ 5.5 V
• Current - Supply: 40mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 770-1001 - ISP 4PORT CYPRESS ENCORE II MCUCY4623 - KIT MOUSE REFERENCE DESIGN428-1774 - EXTENSION KIT FOR ENCORE II428-1773 - KIT DEVELOPMENT ENCORE II
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 428-2258; CY7C63833-LFXC

10.1.1 Interval Timer Clock (ITMRCLK)
The Interval Timer Clock (TITMRCLK), is sourced from an
external clock, the Internal 24 MHz Oscillator, the Internal 32 kHz
Low power Oscillator, or the Timer Capture clock. A
programmable prescaler of 1, 2, 3 or 4 then divides the selected
source. The 12-bit Programmable Interval Timer is a simple
down counter with a programmable reload value. It provides a
1 μs resolution by default. When the down counter reaches zero,
the next clock is spent reloading. The reload value is read and
written while the counter is running, but the counter must not
unintentionally reload when the 12-bit reload value is only
partially stored, that is, between the two writes of the 12-bit value.
The programmable interval timer generates an interrupt to the
CPU on each reload.
The parameters to be set show up on the device editor view of
PSoC Designer when the enCoRe II Timer User Module is
placed.
PITIMER_Divider. The PITIMER_Source is the clock to the timer
and the PITMER_Divider is the value the clock is divided by.
Document 38-08035 Rev. *K
The
S y s te m
T im e r
C lo c k
C lo c k
parameters
are
Figure 10-2. Programmable Interval Timer Block Diagram
C o n fig u ra tio n
S ta tu s a n d
PITIMER_Source
C o n tro l
and
1 2 -b it d o w n
The interval register (PITMR) holds the value that is loaded into
the PIT counter on terminal count. The PIT counter is a down
counter.
The Programmable Interval Timer resolution is configurable. For
example:
TCAPCLK divide by x of CPU clock (for example, TCAPCLK
divide by 2 of a 24 MHz CPU clock gives a frequency of 12 MHz.)
ITMRCLK divide by x of TCAPCLK (for example, ITMRCLK
divide by 3 of TCAPCLK is 4 MHz so resolution is 0.25 μs.)
10.1.2 Timer Capture Clock (TCAPCLK)
The Timer Capture clock is sourced from an external clock,
Internal 24 MHz Oscillator or the Internal 32 kHz Low power
Oscillator. A programmable pre-scaler of 2, 4, 6, or 8 then divides
the selected source.
c o u n te r
re lo a d
1 2 -b it
v a lu e
c o u n te r
re lo a d
1 2 -b it
CY7C63310, CY7C638xx
C o n tro lle r
In te rru p t
Page 25 of 83
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