Figure 12-2. Programmable Interval Timer Block Diagram

System Clock

Clock Timer

CY7C601xx, CY7C602xx

Figure 12-2. Programmable Interval Timer Block Diagram

Configuration

 

 

12-bit reload

Status and

 

 

 

 

value

Control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12-bit down

 

 

12-bit reload

 

Interrupt

counter

 

 

control

 

Controller

 

 

 

 

 

 

 

 

 

 

 

 

12.2.3 Timer Capture Clock (TCAPCLK)

The Timer Capture clock (TCAPCLK) is sourced from the external crystal oscillator, the internal 24 MHz oscillator or the internal 32 kHz low power oscillator. A programmable prescaler of 2, 4, 6, or 8 then divides the selected source.

Figure 12-3. Timer Capture Block Diagram

System Clock

Configuration Status

and Control

Captimer Clock

16-bit counter

1ms

 

Overflow

timer

 

Interrupt

 

 

 

Prescale Mux

Capture Registers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Capture0 Int

 

Capture1 Int

 

 

 

 

 

 

 

Interrupt Controller

Document 38-16016 Rev. *E

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Cypress manual 2. Programmable Interval Timer Block Diagram, Timer Capture Clock TCAPCLK, CY7C601xx, CY7C602xx