MC68376BAMFT20 Freescale Semiconductor, MC68376BAMFT20 Datasheet - Page 342

• Manufacturer Part Number: MC68376BAMFT20
• Manufacturer: Freescale Semiconductor

Specifications of MC68376BAMFT20

• Cpu Family: 68K/M683xx
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 20MHz
• Interface Type: QSPI/SCI
• Program Memory Type: ROM
• Program Memory Size: 8KB
• Total Internal Ram Size: 7.5KB
• # I/os (max): 18
• Number Of Timers - General Purpose: 2
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.25V
• Operating Supply Voltage (min): 4.75V
• On-chip Adc: 16-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 160
• Package Type: PQFP
• Lead Free Status / Rohs Status: Not Compliant

MRMCR — Masked ROM Module Configuration Register
D.4 Masked ROM Module
D.4.1 Masked ROM Module Configuration Register
STOP — Low-Power Stop Mode Enable
D-24
DATA14
MOTOROLA
STOP
15
RESET:
The MRM is used only in the MC68376. Table D-21 shows the MRM address map.
MRM control registers are accessible in supervisor mode only.
The reset states shown for the MRM registers are for the generic (blank ROM) ver-
sions of the device. Several MRM register bit fields can be user-specified on a custom-
masked ROM device. Contact a Motorola sales representative for information on or-
dering a custom ROM device.
The reset state of the STOP bit is the complement of DATA14 state during reset. The
ROM array base address cannot be changed unless the STOP bit is set.
0 = ROM array operates normally.
1 = ROM array operates in low-power stop mode.
14
0
0
$YFF82A
$YFF82C
$YFF82E
$YFF83A
$YFF83C
$YFF83E
13
$YFF820
$YFF822
$YFF824
$YFF826
$YFF828
$YFF830
$YFF832
$YFF834
$YFF836
$YFF838
Address
Unless DATA14 is pulled down during reset, the MRM will be en-
abled. On generic MC68376 devices (blank ROM), the MRM is en-
abled at address $FF0000 (which is outside of the 1 Mbyte address
range of CSBOOT. On these devices, the MRM should be disabled
(since it is blank) by setting the STOP bit during system initialization.
0
0
BOOT
12
1
LOCK
15
11
0
Table D-21 MRM Address Map
EMUL
10
Masked ROM Module Configuration Register (MRMCR)
0
ROM Array Base Address High Register (ROMBAH)
ROM Array Base Address Low Register (ROMBAL)
REGISTER SUMMARY
9
1
ASPC[1:0]
ROM Bootstrap Word 0 (ROMBS0)
ROM Bootstrap Word 1 (ROMBS1)
ROM Bootstrap Word 2 (ROMBS2)
ROM Bootstrap Word 3 (ROMBS3)
Signature High Register (SIGHI)
Signature Low Register (SIGLO)
8
1
NOTE
Not Implemented
Not Implemented
Not Implemented
Not Implemented
Not Implemented
Not Implemented
Not Implemented
7
1
WAIT[1:0]
6
1
5
0
0
4
0
0
3
0
0
USER’S MANUAL
2
0
0
MC68336/376
0
$YFF820
1
0
0
0
0
0