MC68376BAMFT20 Freescale Semiconductor, MC68376BAMFT20 Datasheet - Page 340

• 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

D.3 Standby RAM Module
D.3.1 RAM Module Configuration Register
RAMMCR — RAM Module Configuration Register
STOP — Low-Power Stop Mode Enable
RLCK — RAM Base Address Lock
RASP[1:0] — RAM Array Space
D-22
MOTOROLA
RESET:
STOP
15
1
Table D-19 shows the SRAM address map. SRAM control registers are accessible at
the supervisor privilege level only.
This bit controls whether SRAM operates normally or enters low-power stop mode. In
low-power stop mode, the array retains its contents, but cannot be read or written.
RLCK defaults to zero on reset; it can be written once to one
The RASP field limits access to the SRAM array to one of four CPU32 address spaces.
Refer to Table D-20.
0 = SRAM operates normally.
1 = SRAM enters low-power stop mode.
0 = SRAM base address registers can be written.
1 = SRAM base address registers are locked.
0
0
NOTES:
Address
$YFFB40
$YFFB42
$YFFB44
$YFFB46
1. Y = M111, where M is the logic state of the module mapping (MM) bit in the SIMCR.
0
0
1
0
0
RLCK
RASP[1:0]
15
11
0
Table D-19 SRAM Address Map
00
01
10
11
Table D-20 RASP Encoding
0
0
RAM Array Base Address Register High (RAMBAH)
RAM Array Base Address Register Low (RAMBAL)
RAM Module Configuration Register (RAMMCR)
REGISTER SUMMARY
9
1
RASP[1:0]
Unrestricted program and data
Supervisor program and data
RAM Test Register (RAMTST)
Unrestricted program
Supervisor program
8
1
Space
0
0
0
NOT USED
0
0
USER’S MANUAL
0
MC68336/376
0
$YFFB40
0
0
0