Specifications

Counter/Timers

Each counter/timer must be programmed to operate in one of six

possible count modes. Selection of the count mode is based on the

needs of the application. The counting operation of each

counter/timer is programmed as either binary or Binary-Coded-

Decimal (BCD). The range of a counter/timer programmed for

binary operation is 0 to FFFFh, while the BCD operation range is

0 to decimal 9999.

Count Latch Mode

The Count Latch Mode, shown in Figure 7-3, requires that the

first six bits be set to a logical 0. The Select Counter bits specify

which counter/timer’s data is to be latched.

Address:Base + 3

76543210

000000SC

Select Counter

00 Latch CNT0

01 Latch CNT1

10 Latch CNT2

11 Multiple Latch

Figure 7–3. Counter/Timer Count Mode Register.

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