MC68306EH16B Freescale Semiconductor, MC68306EH16B Datasheet - Page 93
![IC MPU INTEGRATED 16MHZ 132-PQFP](/photos/39/60/396092/4533518_sml.jpg)
MC68306EH16B
Manufacturer Part Number
MC68306EH16B
Description
IC MPU INTEGRATED 16MHZ 132-PQFP
Manufacturer
Freescale Semiconductor
Specifications of MC68306EH16B
Processor Type
M683xx 32-Bit
Speed
16MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
132-MQFP, 132-PQFP
Controller Family/series
68K
Core Size
32 Bit
Cpu Speed
16.7MHz
No. Of Timers
1
Embedded Interface Type
UART
Digital Ic Case Style
PQFP
Supply Voltage Range
4.75V To 5.25V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
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Price
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DATEL
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Manufacturer:
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Quantity:
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5.2 REGISTER DESCRIPTION
The following paragraphs describe the registers in the MC68306. The address of the
register is listed above the register. The numbers in the first row are the bit positions of
each bit in the register. The second row is the bit mnemonic. The reset value for each bit
is listed beneath the bit mnemonic. Where the reset value is U, the value is indeterminate
after power-up, and not affected by reset.
5.2.1 System Register
The system register controls system functions. The value of the AMODE bit after reset is
the value of the AMODE pin latched at reset.
BTERR—Bus Timeout Error
BTEN—Bus Timeout Enable
AMODE—Address Mode
MOTOROLA
This bit is read-only, and is cleared when read. Writes to this bit are ignored.
This bit is used to enable the bus timeout timer.
This bit selects the function of the multiplexed address and chip select pins. The
address mode pin is latched at the end of reset, so the value must be valid and stable at
this time. Writes to this bit are ignored.
0 = No bus timeout bus error.
1 = Bus timeout bus error occurred.
0 = Bus timeout timer is disabled.
1 = Bus timeout timer is enabled.
0 = Address lines selected.
1 = Chip select lines selected.
FFFFFFFE
BTERR
RESET
Freescale Semiconductor, Inc.
15
0
:
For More Information On This Product,
BTEN
14
0
MC68306 USER'S MANUAL
Go to: www.freescale.com
13
0
0
AMOD
AMOD
12
E
E
11
0
0
DUIPL
10
2
1
SUPERVISOR ONLY
DUIPL
9
1
0
DUIPL
8
0
0
5- 3
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