TMP47C990E TOSHIBA [Toshiba Semiconductor], TMP47C990E Datasheet - Page 9

• Manufacturer Part Number: TMP47C990E
• Description: CMOS 4-bit Microcontroller
• Manufacturer: TOSHIBA [Toshiba Semiconductor]

TOSHIBA CORPORATION
(4)
Count registers of the timer/counters (TC1, TC2)
The 47C101/201 has two channels of 12-bit timer/
counters. The count register of the timer/counter is
assigned with a RAM addresses in unit of 4 bits, so
that the initial value is set and the contents are read by
using the RAM manipulation instruction.
The count registers are shared with the stack area
(locations 13 and 14) described earlier, so that the
Figure 2-9. Count Registers of the Timer/Counters (TC1, TC2)
Figure 2-8. Accessing Stack (Save/Restore) at the 47C201
stack is usable from location 13 when the timer/
counter 1 is not used. When none of timer/counter 1
and timer/counter 2 are used, the stack is usable from
location 14.
When both timer/counter 1 and timer/counter 2 are
used, the data memory locations at addresses 77
and 7B
store the user-processed data.
H
(37
H
and 3B
H
for the 47C101) can be used to
TMP47C101/201
H
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