Z86L990 데이터 시트보기 (PDF) - Zilog

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Z86L990

Low-Voltage Microcontrollers with ADC

Zilog 

Z86D990/Z86D991 OTP and Z86L99X ROM

Low-Voltage Microcontrollers with ADC

3

– Three timer interrupts

– One low-battery detector flag

Operating Characteristics

• 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:

– Stop

– Halt

– Low Voltage Standby

• Low-battery detection flag

• Low-voltage protection circuit (also known as VBO, or voltage brownout,

circuit)

• Watch-dog timer and power-on reset circuits

User-Programmable Option Bits

• 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

PS003807-1002

PRELIMINARY

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