GMS87C1102 datasheet(43/80 Pages) HYNIX

43 / 80 page

HYUNDAI MicroElectronics

GMS87C1102 / GMS87C1202

Oct. 1999 ver 1.0

15.2 16-bit Timer/Counter Mode

The Timer register is being run with 16 bits. A 16-bit timer/

counter register T0, T1 are increased from 0000H until it

matches TDR0, TDR1 and then resets to 0000H. The

match output generates Timer 0 interrupt not Timer 1 in-

terrupt.

The clock source of the Timer 0 is selected either internal

or external clock by bit T0CK2, T0CK1 and T0SL0.

In 16-bit mode, the bits T1CK1,T1CK0 and 16BIT of TM1

should be set to "1" respectively.

Figure 15-5 16-bit Timer / Counter Mode

15.3 8-bit Compare Output ( 16-bit )

The GMS87C1201 and GMS87C1202 has a function of

Timer Compare Output. To pulse out, the timer match can

goes to port pin( COMP0 ) as shown in Figure 15-2 and

Figure 15-5 . Thus, pulse out is generated by the timer

match. These operation is implemented to pin, RB4/

COMP0/PWM.

This pin output the signal having a 50 : 50 duty square

wave, and output frequency is same as below equation.

In this mode, the bit PWMO of RB function register (RB-

FUNC) should be set to "1", and the bit PWME of timer1

mode register ( TM1 ) should be set to "0".

In addition, 16-bit Compare output mode is also available.

15.4 8-bit Capture Mode

The Timer 0 capture mode is set by bit CAP0 of timer

mode register TM0 (bit CAP1 of timer mode register TM1

for Timer 1) as shown in Figure 15-6.

As mentioned above, not only Timer 0 but Timer 1 can also

be used as a capture mode.

The Timer/Counter register is increased in response inter-

nal or external input. This counting function is same with

normal timer mode, and Timer interrupt is generated when

timer register T0 (T1) increases and matches TDR0

(TDR1).

TM0

ADDRESS : D0H

RESET VALUE : --000000

CAP0

T0CK2

T0CK1

T0CK0

T0CN

T0ST

TM1

ADDRESS : D2H

RESET VALUE : 00000000

POL

16BIT

PWME

CAP1

T1CK1

T1CK0

T1CN

T1ST

XXXXX

10011

÷ 2

÷ 4

÷ 128

÷ 512

÷ 8

÷ 32

fxin

EC0

Edge Detector

MUX

T1 ( 8-bit )

TDR1 ( 8-bit )

T0IF

CLEAR

COMPARATOR

TIMER 0

INTERRUPT

T0 ( 8-bit )

TDR0 ( 8-bit )

T0ST

0 : Stop

1 : Clear and Start

T0CN

T0CK[2:0]

F/F

COMP0 PIN

÷ 2048

X : The value "0" or "1" corresponding your operation.

)

(

-------------------------------------------------------------------------------------------

GMS87C1102 Datasheet(PDF) 43 Page - Hynix Semiconductor

GMS87C1102 Datasheet(HTML) 43 Page - Hynix Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80

Datasheet Download

Link URL