T48C862-R4 datasheet(45/107 Pages) ATMEL

45 / 107 page

T48C862-R4 [Preliminary]

4551C–4BMCU–01/04

Figure 36.

Timer 2

Timer 2 Modes

Mode 1: 12-bit Compare

Counter

The 4-bit stage and the 8-bit stage work together as a 12-bit compare counter. A com-

pare match signal of the 4-bit and the 8-bit stage generates the signal for the counter

reset, toggle flip-flop or interrupt. The compare action is programmable via the compare

mode register (T2CM). The 4-bit counter overflow (OVF1) supplies the clock output

(POUT) with clocks. The duty cycle generator (DCG) has to be bypassed in this mode.

Figure 37.

12-bit Compare Counter

Mode 2: 8-bit Compare

Counter with 4-bit

Programmable Prescaler

Figure 38.

8-bit Compare Counter

The 4-bit stage is used as programmable prescaler for the 8-bit counter stage. In this

mode, a duty cycle stage is also available. This stage can be used as an additional 2-bit

prescaler or for generating duty cycles of 25%, 33% and 50%. The 4-bit compare output

(CM1) supplies the clock output (POUT) with clocks.

4-bit Counter 2/1

RES

OVF1

Compare 2/1

T2CO1

CM1

POUT

SSI POUT

CL2/2

DCG

T2M1

P4CR

8-bit Counter 2/2

RES

OVF2

Compare 2/2

T2CO2

T2CM

Control

TOG2

INT4

Biphase-,

Manchester-

modulator

OUTPUT

MOUT

Modulator 3

T2O

Timer 2

modulator

output-stage

T2M2

Control

SSI

I/O-bus

T2C

CL2/1

T2I

SYSCL

T1OUT

TOG3

SCL

I/O-bus

DCGO

4-bit counter

4-bit compare

RES

4-bit register

CM1

POUT (CL2/1 /16)

8-bit counter

8-bit compare

8-bit register

OVF2

CM2

RES

T2RM

T2OTM

Timer 2

output mode

and T2OTM-bit

T2IM

T2CTM

TOG2

INT4

CL2/1

DCG

T2D1, 0

4-bit counter

4-bit compare

RES

4-bit register

CM1

POUT

8-bit counter

8-bit compare

8-bit register

OVF2

CM2

RES

T2RM

T2OTM

Timer 2

output mode

and T2OTM-bit

T2IM

T2CTM

TOG2

INT4

CL2/1

DCG

T2D1, 0

DCGO

T48C862-R4 数据表(PDF) 45 Page - ATMEL Corporation

T48C862-R4 数据表(HTML) 45 Page - ATMEL Corporation

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 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载

链接网址

T48C862-R4 数据表(PDF) 45 Page - ATMEL Corporation

T48C862-R4 数据表(HTML) 45 Page - ATMEL Corporation

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 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表 下载

链接网址

数据表下载