C8051T600-GM 参数 Datasheet PDF下载

C8051T600/1/2/3/4/5/6

26.2. PCA0 Interrupt Sources

used to generate a PCA0 interrupt. They are: the main PCA counter overflow flag (CF), which is set upon

a 16-bit overflow of the PCA0 counter, and the individual flags for each PCA channel (CCF0, CCF1, and

CCF2), which are set according to the operation mode of that module. These event flags are always set

when the trigger condition occurs. Each of these flags can be individually selected to generate a PCA0

interrupt, using the corresponding interrupt enable flag (ECF for CF and ECCFn for each CCFn). PCA0

interrupts must be globally enabled before any individual interrupt sources are recognized by the proces-

sor. PCA0 interrupts are globally enabled by setting the EA bit and the EPCA0 bit to logic 1.

(for n = 0 to 2)

PCA0CPMn

P ECCMT P E

WC A A A O WC

MO P P T G MC

1 MP N n n n F

6 n n n

n

n

PCA0CN

CC

FR

CCC

CCC

FFF

2 1 0

PCA0MD

C WW

I DD

DT L

LEC

K

CCCE

PPPC

SSSF

2 1 0

PCA Counter/Timer 16-

bit Overflow

ECCF0

0

1

EPCA0

0

1

0

1

EA

0

1

PCA Module 0

(CCF0)

ECCF1

Interrupt

Priority

Decoder

PCA Module 1

(CCF1)

ECCF2

0

1

PCA Module 2

(CCF2)

0

1

Figure 26.3. PCA Interrupt Block Diagram

162

Rev. 1.2