mc68hc916y3 Freescale Semiconductor, Inc, mc68hc916y3 Datasheet - Page 404

• Manufacturer Part Number: mc68hc916y3
• Description: Mc68hc16y3 16 Bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

D.3.2 RAM Test Register
RAMTST — RAM Test Register
D.3.3 Array Base Address Registers
RAMBAH — Array Base Address Register High
RAMBAL — Array Base Address Register Low
D-26
MOTOROLA
RESET:
RESET:
ADDR
15
15
15
0
Used for factory test only.
RAMBAH and RAMBAL specify the SRAM array base address in the system memory
map. They can only be written while the SRAM is in low-power stop mode (STOP = 1,
the default out of reset) and the base address lock is disabled (RLCK = 0, the default
out of reset). This prevents accidental remapping of the array. Because the CPU16
drives ADDR[23:20] to the same logic level as ADDR19, the values of the RAMBAH
ADDR[23:20] fields must match the value of the ADDR19 field for the array to be
accessible. These registers may be read at any time. RAMBAH[15:8] are
unimplemented and will always read zero.
ADDR
14
14
0
ADDR
13
13
0
ADDR
NOT USED
12
12
0
Freescale Semiconductor, Inc.
ADDR
11
11
For More Information On This Product,
0
10
0
0
Go to: www.freescale.com
REGISTER SUMMARY
9
0
0
8
8
0
0
ADDR
23
7
0
7
0
0
ADDR
22
6
0
6
0
0
ADDR
21
5
0
5
0
0
ADDR
20
4
0
4
0
0
ADDR
19
3
0
3
0
0
MC68HC16Y3/916Y3
ADDR
USER’S MANUAL
18
2
0
2
0
0
$YFFB02
$YFFB04
$YFFB06
ADDR
17
1
0
1
0
0
ADDR
16
0
0
0
0
0