Freescale Semiconductor
Advance Information
Document Number: MM908E624
Rev. 10.0, 8/2011
Integrated Triple High Side
Switch with Embedded MCU
and LIN Serial Communication
for Relay Drivers
The 908E624 is an integrated single-package solution that
includes a high performance HC08 microcontroller with a
SMARTMOS
analog control IC. The HC08 includes flash memory, a
timer, enhanced serial communications interface (ESCI), an analog-
to-digital converter (ADC), serial peripheral interface (SPI) (only
internal), and an internal clock generator module. The analog control
die provides three high side outputs with diagnostic functions, voltage
regulator, watchdog, current sense operational amplifier, and local
interconnect network (LIN) physical layer.
The single package solution, together with LIN, provides optimal
application performance adjustments and space saving PCB design.
It is well suited for the control of automotive high current motors
applications using relays (e.g., window lifts, fans, and sun roofs).
Features
• High performance M68HC908EY16 Core
• 16 k Bytes of On-chip Flash Memory, 512 Bytes of RAM
• Internal clock generator module
• Two 16-Bit, 2-channel timers
• 10-Bit analog-to-digital converter (ADC)
• LIN physical layer interface
• Low dropout voltage regulator
• Three high side outputs
• Two wake-up inputs
• 16 microcontroller I / Os
• Pb-free packaging designated by suffix code EW
908E624
HIGH SIDE SWITCH
EW (Pb-FREE) SUFFIX
98ASA99294D
54-pin SOICW
ORDERING INFORMATION
Device
MM908E624ACEW/ R2
MM908E624ACPEW/ R2
MM908E624AYEW/ R2
MM908E624AYPEW/ R2
- 40°C to 125°C
- 40°C to 85°C
54 SOICW
Temperature
Range (T
A
)
Package
V
BAT
LIN Interface
5.0 V
LIN
VREFH
VDDA
EVDD
VCC
VDD
VREFL
VSSA
EVSS
AGND
GND
VSP1
VSP
HS3
L1
L2
908E624
HS1
Microcontroller
Ports
RXD
PTE1/RXD
RST
RST_A
IRQ
IRQ_A
PTD0/TACH0
PW/MIN
PTA0-4
PTB1;3-7
PTC2-4
PTD1/TACH1
M
HS2
+E
WDCONF
To Microcontroller A/D Channel
OUT
-E
Figure 1. 908E624 Simplified Application Diagram
*This document contains certain information on a product under development.
Freescale reserves the right to change or discontinue this product without notice.
© Freescale Semiconductor, Inc., 2011. All rights reserved.
Internal
Bus
PTA1/KBD1
PTA0/KBD0
PTD1/TACH1
PTD1/TACH1
PTB7/AD7/TBCH1
PTD0/TACH0
PTB6/AD6/TBCH0
PTB5/AD5
PTB4/AD4
PTB3/AD3
PTE1/RxD
PTB2/AD2
PTB1/AD1
PTB0/AD0
PTE0/TxD
PORT A
PTA2/KBD2
PTC0/MISO
DDRA
PORT C
PTC4/OSC1
PTA3/KBD3
PTC1/MOSI
DDRC
DDRD
PORT D
PORT B
DDRB
DDRE
PORT E
2
RST_A
IRQ_A
PTE1/RXD
PTD0/TACH0
IRQ
VREFL
AGND
VSUP1
VSUP2
EVDD
RXD
EVSS
VSSA
GND
LIN
PWMIN
WDCONF
RST
908E624
M68HC08 CPU
VSUP1
ALU
5-Bit Keyboard Interrupt
Module
Single Breakpoint Break
Module
INTERNAL BLOCK DIAGRAM
VREFH
Control and Status Register, 64 Bytes
User Flash, 15,872 Bytes
User RAM, 512 Bytes
Monitor ROM, 310 Bytes
2-channel Timer Interface
Module B
2-channel Timer Interface
Module A
VDDA
CPU
Registers
PTE0/TXD
TXD
Voltage
Regulator
LIN Physical
Layer
PTA0/KBD0
VDD
PTA1/KBD1
Window
Watchdog
PWMIN
PTA2/KBD2
FLASH programming (burn in) ROM,
1024 Bytes
VSUP2
User Flash Vector Space, 36 Bytes
Enhanced Serial
Communication Interface
Module
Computer Operating
Properly Module
PTA3/KBD3
Internal Clock Generator
Module
High Side
Driver &
Diagnostic
VSUP2
PWMIN
HS1
OSC2
OSC1
PTA4/KBD4
Reset Control
Module
PTB1/AD1
24 Internal System
Integration Module
Serial Pheripheral Interface
Module
RST
High Side
Driver &
Diagnostic
HS2
PTB3/AD3
Single External IRQ
Module
Configuration Register
Module
IRQ
VSUP2
PTB4/AD4
10 Bit Analog-to-Digital
Converter Module
Periodic Wakeup Timebase
Module
VREFH
VDDA
VREFL
High Side
Driver &
Diagnostic
PTA6/SS
SS
HS3
PTB5/AD5
VSSA
PTB6/AD6/TBCH0
POWER
Arbiter Module
VDD
VSS
PTC0/MISO
MISO
Wake Up
Input 1
MOSI
L1
PTB7/AD7/TBCH1
Power-On Reset Module
Prescaler Module
INTERNAL BLOCK DIAGRAM
PTC1/MOSI
SPI
&
Mode Control
PTC2/MCLK
Security Module
BEMF Module
PTA5/SPSCK
PTA6/SS
PTA5/SPSCK
PTA4/KBD4
PTC2/MCLK
PTC3/OSC2
PTC4/OSC1
SPSCK
Wake Up
Input 2
L2
PTC3/OSC2
VCC
+E
Amplifier
-E
FLSVPP
OUT
MCU Die
Analog Die
Analog Integrated Circuit Device Data
Freescale Semiconductor
Figure 2. 908E624 Simplified Internal Block Diagram
PIN CONNECTIONS
PIN CONNECTIONS
PTB7/AD7/TBCH1
PTB6/AD6/TBCH0
PTC4/OSC1
PTC3/OSC2
PTC2/MCLK
PTB5/AD5
PTB4/AD4
PTB3/AD3
IRQ
RST
PTB1/AD1
PTD0/TACH0
PTD1/TACH1
NC
NC
NC
PWMIN
RST_A
IRQ_A
NC
NC
NC
L1
L2
HS3
HS2
HS1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
PTA0/KBD0
PTA1/KBD1
PTA2/KBD2
FLSVPP
PTA3/KBD3
PTA4/KBD4
VREFH
VDDA
EVDD
EVSS
VSSA
VREFL
PTE1/RXD
NC
RXD
WDCONF
+E
-E
OUT
VCC
AGND
VDD
NC
VSUP1
GND
LIN
VSUP2
Figure 3. Pin Connections
Table 1. Pin Definitions
A functional description of each pin can be found in the
Functional Pin Description
section beginning on page
16.
Die
MCU
Pin
1
2
6
7
8
11
3
4
5
9
10
12
13
14, 15, 16,
20, 21, 22,
32, 41
42
Pin Name
PTB7/AD7/TBCH1
PTB6/AD6/TBCH0
PTB5/AD5
PTB4/AD4
PTB3/AD3
PTB1/AD1
PTC4/OSC1
PTC3/OSC2
PTC2/MCLK
IRQ
RST
PTD0/TACH0
PTD1/TACH1
NC
Formal Name
Port B I/Os
Definition
These pins are special function, bidirectional I/O port pins, that are
shared with other functional modules in the MCU.
MCU
Port C I/Os
These pins are special function, bidirectional I/O port pins, that are
shared with other functional modules in the MCU.
This pin is an asynchronous external interrupt input pin.
This pin is bidirectional, allowing a reset of the entire system. It is driven
low when any internal reset source is asserted.
These pins are special function, bidirectional I /O port pins, that are
shared with other functional modules in the MCU.
Not connected.
MCU
MCU
MCU
—
External Interrupt
Input
External Reset
Port D I /Os
No Connect
MCU
PTE1/ RXD
Port E I /O
This pin is a special function, bidirectional I/O port pin, that can is shared
with other functional modules in the MCU.
908E624
Analog Integrated Circuit Device Data
Freescale Semiconductor
3
PIN CONNECTIONS
Table 1. Pin Definitions (continued)
A functional description of each pin can be found in the
Functional Pin Description
section beginning on page
16.
Die
MCU
MCU
MCU
MCU
Pin
43
48
44
47
45
46
49
50
52
53
54
51
17
18
19
23
24
25
26
27
31
28
29
30
34
33
35
36
37
38
39
Pin Name
VREFL
VREFH
VSSA
VDDA
EVSS
EVDD
PTA4/KBD4
PTA3/KBD3
PTA2/KBD2
PTA1/KBD1
PTA0/KBD0
FLSVPP
PWMIN
RST_A
IRQ_A
L1
L2
HS3
HS2
HS1
VSUP1
VSUP2
LIN
GND
AGND
VDD
VCC
OUT
-E
+E
WDCONF
Formal Name
ADC References
ADC Supply Pins
MCU Power Supply
Pins
Port A I /Os
Definition
These pins are the reference voltage pins for the analog-to-digital
converter (ADC).
These pins are the power supply pins for the analog-to-digital converter.
These pins are the ground and power supply pins, respectively. The
MCU operates from a single power supply.
These pins are special function, bidirectional I/O port pins that are
shared with other functional modules in the MCU.
MCU
Analog
Analog
Analog
Analog
Analog
Test Pin
Direct High Side
Control Input
Internal Reset Output
Internal Interrupt
Output
Wake-Up Inputs
High Side Output
For test purposes only. Do not connect in the application.
This pin allows the enabling and PWM control of the high side HS1 and
HS2 pins.
This pin is the reset output pin of the analog die.
This pin is the interrupt output pin of the analog die indicating errors or
wake-up events.
These pins are the wake-up inputs of the analog chip.
These output pins are low R
DS(ON)
high side switches.
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Power Supply Pins
LIN Bus
Power Ground Pins
Voltage Regulator
Output
Amplifier Power
Supply
Amplifier Output
Amplifier Inputs
Window
Watchdog
Configuration Pin
LIN Transceiver
Output
These pins are device power supply pins.
This pin represents the single-wire bus transmitter and receiver.
These pins are device power ground connections.
The + 5.0 V voltage regulator output pin is intended to supply the
embedded microcontroller.
This pin is the single +5.0 V power supply for the current sense
operational amplifier.
This pin is the output of the current sense operational amplifier.
These pins are the current sense operational amplifier inverted and
non-inverted inputs.
This input pin is for configuration of the watchdog period and allows the
disabling of the watchdog.
This pin is the output of LIN transceiver.
Analog
40
RXD
908E624
4
Analog Integrated Circuit Device Data
Freescale Semiconductor
ELECTRICAL CHARACTERISTICS
MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
MAXIMUM RATINGS
Table 2. Maximum Ratings
All voltages are with respect to ground unless otherwise noted. Exceeding limits on any pin may cause permanent damage to
the device.
Rating
ELECTRICAL RATINGS
Supply Voltage
Analog Chip Supply Voltage under Normal Operation (Steady-state)
Analog Chip Supply Voltage under Transient Conditions
MCU Chip Supply Voltage
Input Pin Voltage
Analog Chip
Microcontroller Chip
Maximum Microcontroller Current per Pin
All Pins except VDD, VSS, PTA0:PTA6 , PTC0:PTC1
PTA0:PTA6, PTC0:PTC1 Pins
Maximum Microcontroller VSS Output Current
Maximum Microcontroller VDD Input Current
Current Sense Operational Amplifier
Maximum Input Voltage, +E, -E Pins
Maximum Input Current, +E, -E Pins
Maximum Output Voltage, OUT Pin
Maximum Output Current, OUT Pin
LIN Supply Voltage
Normal Operation (Steady-state)
Transient Input Voltage (per ISO7637 Specification) and with
External Components
(Figure 4,
page
13)
L1 and L2 Pin Voltage
Normal Operation with a 33 kΩ resistor (Steady-state)
Transient Input Voltage (per ISO7637 Specification) and with
External Components
(Figure 4,
page
13)
ESD Voltage
Human Body Model
(1)
Machine Model
(1)
Charge Device Model
(1)
V
ESD1
V
ESD2
V
ESD3
± 2000
±100
± 500
V
WAKE(SS)
V
WAKE(PK)
-18 to 40
-100 to 100
V
V
BUS(SS)
V
BUS(
PK
)
-18 to 40
-150 to 100
V
V
+ E-E
I
+ E-E
V
OUT
I
OUT
- 0.3 to 7.0
± 20
- 0.3 to V
CC
+ 0.3
± 20
V
mA
V
mA
V
I
PIN(1)
I
PIN(2)
I
MVSS
I
MVDD
±15
± 25
100
100
mA
mA
V
IN (ANALOG)
V
IN (MCU)
- 0.3 to V
DD
+0.3
V
SS
- 0.3 to V
DD
+0.3
mA
V
SUP(SS)
V
SUP(PK)
V
DD
- 0.3 to 27
- 0.3 to 40
- 0.3 to 5.5
V
V
Symbol
Value
Unit
Notes
1. ESD1 testing is performed in accordance with the Human Body Model (C
ZAP
= 100 pF, R
ZAP
= 1500
Ω),
the Machine Model (C
ZAP
=
200 pF, R
ZAP
= 0
Ω),
and the Charge Device Model, Robotic (C
ZAP
= 4.0 pF).
908E624
Analog Integrated Circuit Device Data
Freescale Semiconductor
5
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