Z86D990 Datasheet, PDF (13/102 Pages) Zilog, Inc. – Low-Voltage Micro controllers with ADC

Z86D990/Z86D991 OTP and Z86L99X ROM
Low-Voltage Microcontrollers with ADC
6
P62
P63
P25
P26
P27
AV_SS
V_Ref–
P44/ADC0
P45/ADC1
P46/ADC2
P47/ADC3
V_Ref+
AVDD/V_{DD_CORE}
V_{DD_padring}
XTAL2
XTAL1
P51/CIN1/Captive Timer Input
P52/CIN2/T1 Timer Input (TIN)
P53/CREF2
P54/COUT1
1
40
2
39
3
38
4 _{Z86D990/ 37}
5
6
Z86L990 ³⁶
35
7
34
8
33
9
32
10
31
11
30
12
29
13
28
14
27
15
26
16
25
17
24
18
23
19
22
20
21
P61
P60
P24
P23
P22
P21
P20
P43/Combined T8 T16 Output
V_SS
P42
P41/T16 Output
P40/T8 Output
P50/CREF1
P56/T1 Timer Output
P57
P55/COUT2
P67
P66
P65
P64
Notes:
1. AV_DD must be connected to V_{DD_CORE} and a 10-µF capacitor for good A/D conversion.
2. Power must be connected to V_{DD_padring}. Current passes to V_{DD_CORE} through the internal
power filter.
Figure 3. 40-Pin DIP Pin Assignment
PS003807-1002
PRELIMINARY