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PC33889 Datasheet(PDF) 22 Page - Motorola, Inc

Part # PC33889
Description  System Basis Chip Lite with Low Speed Fault Tolerant CAN Interface
PDF  30 Pages
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Manufacturer  MOTOROLA [Motorola, Inc]
Direct Link  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

PC33889 Datasheet(HTML) 22 Page - Motorola, Inc

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PC33889
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PC33889
7.2
Register description
7.2.1
MCR Register
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
MCR
D3D2D1D0
$000b
W
MCTR2
MCTR1
MCTR0
R
BATFAIL
VDDTEMP
GFAIL
WDRST
Reset
0000
Reset condition
POR, RESET
POR, RESET
POR, RESET
Table 7-2.
MCTR2
MCTR1
MCTR0
SBC mode
Description
0
0
0
Enter/leave debug mode
To enter debug mode, SBC must be
in Normal or Standby mode and
BATFAIL(1) must be still at 1. To
leave debug mode, BATFAIL must
be at 0.
00
1
Normal
0
1
0
Standby
0
1
1
Stop, watchdog off (2)
0
1
1
Stop, watchdog on (2)
10
0
Sleep (3)
10
1
Normal
No watchdog running, debug mode
1
1
0
Standby
11
1
Stop
Status bit
Description
GFAIL
Logic OR of CAN failure, HS1 failure, V2LOW
BATFAIL
Battery fail flag (Vsup<3V)
VDDTEMP
Temperature pre-warning on VDD (latched)
WDRST
Watchdog reset occurred
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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