MC33889DW Freescale Semiconductor, MC33889DW Datasheet - Page 22

• Manufacturer Part Number: MC33889DW
• Description: IC SYSTEM BASE W/CAN 28-SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MC33889DW

• Controller Type: System Basis Chip
• Interface: CAN
• Voltage - Supply: 5.5 V ~ 18 V
• Current - Supply: 45mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

PC33889
7.2
7.2.1
Control bits
(1): Bit BATFAIL cannot be set by SPI. BATFAIL is set when Vsup falls below 3V.
(2): Watchdog ON or OFF depends upon RCR register bit D3.
(3): Before entering sleep mode, bit NOSTOP in RCR register must be previously set to 1.
Status bits
Table 7-2.
Reset condition
Register description
MCR Register
$000b
Reset
MCR
MCTR2
0
0
0
0
0
1
1
1
1
MCTR1
VDDTEMP
Status bit
BATFAIL
WDRST
W
GFAIL
R
0
0
1
1
1
0
0
1
1
MCTR0
Freescale Semiconductor, Inc.
BATFAIL
For More Information On This Product,
0
1
0
1
1
0
1
0
1
D3
0
Logic OR of CAN failure, HS1 failure, V2LOW
Temperature pre-warning on VDD (latched)
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Enter/leave debug mode
Stop, watchdog off
Stop, watchdog on
SBC mode
Battery fail flag (Vsup<3V)
PC33889
Watchdog reset occurred
Sleep
Standby
Standby
Normal
Normal
POR, RESET
Stop
VDDTEMP
MCTR2
(3)
Description
D2
0
(2)
(2)
To enter debug mode, SBC must be
in Normal or Standby mode and
BATFAIL
leave debug mode, BATFAIL must
be at 0.
No watchdog running, debug mode
POR, RESET
MCTR1
GFAIL
D1
(1)
0
must be still at 1. To
Description
POR, RESET
WDRST
MCTR0
D0
0
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