Pioneer SX-5L Panduan Servis - Halaman 14

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The RWM hold period in the SX-7 has been

extended by inhibiting the microcomputer (con-

sumption current is less than 10pA). And in the

SX-6, SX-5 and SX-4, the battery life has likewise

been extended in much the same way. This

inhibition operation is controlled by the I-EQ- and

STBY terminals. The switching sequence involved

in switching to inhibit mode must follow the order

shown in Fig. 1-8. Normal memory functions are

lost once the inhibit mode Vcc drops below 2.5V.

Note that the RIESET terminal has to be at H level

during inhibit mode. Furthermore, approximately

lmA of current is consumed until cessation of the

clock pulse input (Extal).

Although the switch on sequence during restart

has not been specified, the reset signal is applied

only after all prescribed values have been retumed

to normal.

Fig. 1-8

Power supply sequence for inhibit mode