Z86D99 ZILOG [Zilog, Inc.], Z86D99 Datasheet - Page 10

• Manufacturer Part Number: Z86D99
• Description: Low-Voltage Micro controllers with ADC
• Manufacturer: ZILOG [Zilog, Inc.]

PS003807-1002
Operating Characteristics
User-Programmable Option Bits
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8-MHz operation
3.0 V to 5.5 V operating voltage (Z86D990/Z86D991)
2.3 V to 5.5 V operating voltage (Z86L990/Z86L991)
Low power consumption with three standby modes:
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Low-battery detection flag
Low-voltage protection circuit (also known as V
circuit)
Watch-dog timer and power-on reset circuits
Clock source—RC/other (LC, resonator, or crystal)
Watch-dog timer permanently enable
32-kHz crystal
Port 20–27 pull-up resistive transistor
Port 40–42 pull-up resistive transistor
Port 44–47 pull-up resistive transistor
Port 50–51 pull-up resistive transistor
Port 54–57 pull-up resistive transistor
Port 60–63 pull-up resistive transistor (not available in Z86D991/Z86L991)
Port 64–67 pull-up resistive transistor (not available in Z86D991/Z86L991)
P43 high impedance in STOP mode (available in OTP only)
Force P43 to output a 1 in the open-drain configuration
Three timer interrupts
One low-battery detector flag
Stop
Halt
Low Voltage Standby
P
R
E
L
I
M
Z86D990/Z86D991 OTP and Z86L99X ROM
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Low-Voltage Microcontrollers with ADC
N
A
R
BO
Y
, or voltage brownout,
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