Z86L70 Datasheet, PDF (17/61 Pages) Zilog, Inc. – IR/Low-Voltage Microcontroller

Zilog
Z86L70/71/75/C71
IR/Low-Voltage Microcontroller
Comparator Inputs. In Analog Mode, Port 3 (P31 and Notes: Comparators are powered down by entering STOP
P32) have a comparator front end. P33 serves as the ref- Mode. For P31-P33 to be used as a Stop-Mode Recovery
erence for both comparators. In this mode, the P33 internal source, these inputs must be placed into digital mode.
data latch and its corresponding IRQ1 is diverted to the
1
SMR Sources (excluding P31, P32, and P33) as shown in ^{Comparator Outputs. COMP1 may be programmed to be}
Figure 38. In digital mode, P33 is used as D3 of the Port 3 ^{outputted on P34 through the PCON register (Figure 15).}
input register which then generates IRQ1 as shown in Fig-
ure 16.
Power-On Reset. the typical reset output time is 5 ms.
The Z86L7X does not reset WDTMR, SMR, P2M, or P3M
registers on a Stop-Mode Recovery operation.
P31 (AN1)
Pref
Z86L7X
MCU
Pref1
P31
P32
P33 _{Port 3}
(I/O or Handshake)
P34
P35
P36
P37
200 KΩ
Mask
Option
Note:
P31, 32, 33 have a 200 KΩ
mask option
R247 = P3M
D1
1 = Analog
0 = Digital
Comp1
+
-
DIG.
AN.
IRQ2, P31 Data Latch
P32 (AN2)
P33 (REF2)
Comp2
+
-
IRQ0, P32 Data Latch
From Stop-Mode
Recovery Source of SMR
DS97LVO0500
IRQ1, P33 Data Latch
Figure 11. Port 3 Configuration
PRELIMINARY
1-17