Z86L78 datasheet(42/59 Pages) ZILOG

Part #	Z86L78

Description	IR/Low-Voltage Microcontroller

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Manufacturer	ZILOG [Zilog, Inc.]

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42 / 59 page

Z86L78

IR/Low-Voltage Microcontroller

Zilog

2-42

DS97LVO0701

FUNCTIONAL DESCRIPTION (Continued)

Stop-Mode Recovery Register (SMR). This register se-

lects the clock divide value and determines the mode of

Stop-Mode Recovery (Figure 33). All bits are Write Only

except bit 7, which is Read Only. Bit 7 is a flag bit that is

hardware set on the condition of STOP recovery and reset

by a power-on cycle. Bit 6 controls whether a low level or

a high level is required from the recovery source. Bit 5 con-

trols the reset delay after recovery. Bits D2, D3, and D4, of

the Stop-Mode Recovery signal. Bits D0 determines if

SCLK/TCLK are divided by 16 or not.

Figure 33. Stop-Mode Recovery Register

D7

D6

D5

D4

D3

D2

D1

D0

SMR (0F) 0B

SCLK/TCLK Divide-by-16

0 OFF

1 ON

Reserved (Must be 0)

Stop-Mode Recovery Source

000

001

010

011

100

101

11 0

111

Stop Delay

0 OFF

1 ON

Stop Recovery Level

0 Low

1 High

Stop Flag

0 POR

1 Stop Recovery**

* Default Setting After Reset

** Default Setting After Reset and Stop-Mode Recovery

**

*

POR Only

Reserved

P31

P32

P33

P27

P2 NOR 0-3

P2 NOR 0-7

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Z86L78 Datasheet(PDF) 42 Page - Zilog, Inc.

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