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Freescale Semiconductor
Technical Data
Document Number: MM908E624
Rev. 11.0, 4/2012
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), internal serial peripheral interface (SPI),
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 KB of on-chip flash memory, 512 B of RAM
• Internal clock generator module
• Two 16-bit, two-channel timers
• 10-bit ADC
• LIN physical layer interface
• Low dropout voltage regulator
• Three high side outputs
• Two wake-up inputs
• 16 microcontroller I/Os
908E624
908E624
HIGH SIDE SWITCH
EW (Pb-FREE) SUFFIX
98ASA99294D
54-pin SOICW
ORDERING INFORMATION
Device
(Add an R2 suffix for Tape
and reel orders)
Temperature
Range (TA)
Package
MM908E624ACPEW
MM908E624AYPEW
-40°C to 85°C
-40°C to 125°C
54 SOICW
LIN Interface
5.0 V
Microcontroller
Ports
LIN
VREFH
VDDA
EVDD
VCC
VDD
VREFL
VSSA
EVSS
AGND
GND
VSP1
RXD
PTE1/RXD
RST
RST_A
IRQ
IRQ_A
PTD0/TACH0
PW/MIN
PTA0-4
PTB1;3-7
PTC2-4
PTD1/TACH1
VSP
HS3
L1
L2
HS1
HS2
+E
WDCONF
OUT
-E
VBAT
M
To Microcontroller A/D Channel
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., 2012. All rights reserved.

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INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
AGND
GND
VSUP2
VSUP1
PWMIN
RST_A
IRQ_A
WDCONF
LIN
RXD
PTE1/RXD
PTD0/TACH0
RST
IRQ
VREFL
VSSA
EVSS
EVDD
VDDA
VREFH
908E624
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Analog Integrated Circuit Device Data
Freescale Semiconductor

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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 PTA0/KBD0
53 PTA1/KBD1
52 PTA2/KBD2
51 FLSVPP
50 PTA3/KBD3
49 PTA4/KBD4
48 VREFH
47 VDDA
46 EVDD
45 EVSS
44 VSSA
43 VREFL
42 PTE1/RXD
41 NC
40 RXD
39 WDCONF
38 +E
37 -E
36 OUT
35 VCC
34 AGND
33 VDD
32 NC
31 VSUP1
30 GND
29 LIN
28 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 Pin
Pin Name
Formal Name
Definition
MCU
MCU
MCU
MCU
1 PTB7/AD7/TBCH1
2 PTB6/AD6/TBCH0
6 PTB5/AD5
7 PTB4/AD4
8 PTB3/AD3
11 PTB1/AD1
Port B I/Os
These pins are special function, bidirectional I/O port pins, that are
shared with other functional modules in the MCU.
3
PTC4/OSC1
Port C I/Os
These pins are special function, bidirectional I/O port pins, that are
4 PTC3/OSC2
shared with other functional modules in the MCU.
5 PTC2/MCLK
9 IRQ External Interrupt This pin is an asynchronous external interrupt input pin.
Input
10
RST
External Reset
This pin is bidirectional, allowing a reset of the entire system. It is driven
low when any internal reset source is asserted.
MCU
MCU
12
13
14, 15, 16,
20, 21, 22,
32, 41
42
PTD0/TACH0
PTD1/TACH1
NC
PTE1/ RXD
Port D I/Os
No Connect
These pins are special function, bidirectional I/O port pins, that are
shared with other functional modules in the MCU.
Not connected.
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.
Analog Integrated Circuit Device Data
Freescale Semiconductor
908E624
3