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| 型號： | PM908E624ACDWBR2 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO54 |
| 封裝： | PLASTIC, SOIC-54 |
| 文件頁數(shù)： | 10/24頁 |
| 文件大?。?/td> | 718K |
| 代理商： | PM908E624ACDWBR2 |
908E624
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
18
FUNCTIONAL TERMINAL DESCRIPTION
Power Supply Terminals (VSUP1 and VSUP2)
VSUP1
This power supply terminal supplies the voltage regulator
and the internal logic.
VSUP2
This power supply terminal is the positive supply for the high-
side switches.
The 908E624 can be supplied from the battery line through
VSUP1 and VSUP2. An external diode is required to protect
against negative transients and reverse battery. It can operate
from 4.5 V and under the jump start condition at 27 V DC.
Device functionality is guaranteed down to 4.5 V at VSUP1 and
VSUP2 terminals. These terminals sustain standard automotive
voltage conditions such as load dump at 40 V.
Overvoltage and Undervoltage Pre-Warning
If the voltage at VSUP1 exceeds 20 V typical or falls below
6.0 V typical, the device generates an interrupt. VSOV or VSUV
bits are set in the SPI register. Information is latched until the bit
is read AND the fault has disappeared. The interrupt is not
maskable.
Ground Terminal (GND)
GND is the device ground connection.
High-Side Output Terminals (HS1 and HS2)
These are two high-side switches to drive loads such as
relays or lamps. They are protected against overcurrent and
overtemperature and include internal clamp circuitry for
inductive load drive. Control is done through SPI. PWM
capability is offered through the PWMIN input.
High-Side Output HS3
This high-side switch can be used to drive small lamps, Hall-
effect sensors, or switch pull-up resistors. Control is done
through SPI.
LIN Bus Terminal (LIN)
This terminal represents the single-wire bus transmitter and
receiver. It is suited for automotive bus systems and is based
on the LIN Bus Specification.
Wake Up Terminals (L1 and L2)
These terminals are high-voltage inputs used to sense
external switches and to wake up the device from SLEEP or
STOP mode. During Normal mode the state of these terminals
can be read through SPI.
Sense Amplifier E+, E-, OUT, AGND, VCC
E+, E-, and OUT are the three terminals of the current sense
amplifier. In addition, the amplifier has its dedicated ground,
AGND, and supply input, VCC. The operational amplifier is only
operating in device Normal mode. It is not operating in SLEEP
or STOP modes.
5.0 V Supply Output Terminal (VDD)
VDD is the voltage regulator output terminal. This terminal
needed to place an external capacitor to stabilize the regulated
output voltage. The terminal is protected against shorts to GND
with an integrated current limitation (temperature shutdown
could occur).
Receiver Terminal (RxD)
This terminal is the receiver terminal from the LIN physical
layer. It must be connected externally to the RxD terminal of the
MCU.
Interrupt Terminal (IRQB_A)
This terminal is the interrupt output terminal of the analog
die. It must be connected to the IRQB terminal of the MCU.
Reset Terminal (RSTB_A)
This terminal is the reset terminal of the analog die. It must
be connected to the RSTB terminal of the MCU.
Test Terminal (FLSVPP)
This is a test terminal. In the application leave this terminal
open.
PWMIN Terminal
This terminal is the direct PWM input for high-side outputs 1
and 2 (HS1 and HS2). If no PWM control is required, PWMIN
must be connected to VDD in order to have a high level on this
input.
WDCONF Terminal
This terminal is the configuration terminal for the internal
watchdog. A resistor is connected to this terminal. The resistor
value defines the watchdog period. If the terminal is open, the
W / D period is fixed (default value). If this terminal is tied to
GND, the watchdog is disabled (for programming/debug).
Port A I/O Terminals
Port A input / output (I /O) terminals (PTA6/SS, PTA5/
SPSCK, PTA4/KDB4, PTA3 /KBD3, PTA2/KBD2, PTA1/
KBD1, and PTA0/KBD0) are special-function, bidirectional I/O
port terminals. PTA5 and PTA6 are shared with the serial
peripheral interface (SPI). PTA4–PTA0 can be programmed to
serve as keyboard interrupt terminals.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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