aduc7033bstz-8l-rl Analog Devices, Inc., aduc7033bstz-8l-rl Datasheet - Page 68

• Manufacturer Part Number: aduc7033bstz-8l-rl
• Description: Integrated Precision Battery Sensor For Automotive
• Manufacturer: Analog Devices, Inc.

ADuC7033
PLLCON Prewrite Key PLLKEY0
Name:
Address:
Access:
Key:
Function:
PLLCON Postwrite Key PLLKEY1
Name:
Address:
Access:
Key:
Function:
PLLCON Register
Name:
Address:
Default
Value:
Access:
Function:
Table 45. PLLCON MMR Bit Designations
Bit
31 to 2
1 to 0
1
included after the clock switch is written to PLLCON.
If the user code switches MCU clock sources, a dummy MCU cycle should be
Description
Reserved, these bits should be written as 0 by user
code.
PLL Clock Source.
00 = lower power, 131 kHz oscillator.
01 = precision 131 kHz oscillator.
10 = external 32.768 kHz crystal.
11 = reserved.
PLLKEY0
0xFFFF0410
Write only
0x000000AA
PLLCON is a keyed register that requires a
32-bit key value to be written before and after
PLLCON. PLLKEY0 is the prewrite key.
PLLKEY1
0xFFFF0418
Write only
0x00000055
PLLCON is a keyed register that requires a
32-bit key value to be written before and after
PLLCON. PLLKEY1 is the postwrite key.
PLLCON
0xFFFF0414
0x00
Read/write
This 8-bit register allows user code
dynamically select the PLL source clock from
three different oscillator sources.
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POWCON Prewrite Key POWKEY0
Name:
Address:
Access:
Key:
Function:
POWCON Postwrite Key POWKEY1
Name:
Address:
Access:
Key:
Function:
POWCON Register
Name:
Address:
Default Value:
Access:
Function:
POWKEY0
0xFFFF0404
Write only
0x00000001
POWCON is a keyed register that requires a
32-bit key value to be written before and after
POWCON. POWKEY0 is the prewrite key.
POWKEY1
0xFFFF040C
Write only
0x000000F4
POWCON is a keyed register that requires a
32-bit key value to be written before and after
POWCON. POWKEY1 is the postwrite key.
POWCON
0xFFFF0408
0x79
Read/write
This 8-bit register allows user code to dynami-
cally enter various low power modes and modify
the CD divider that controls the speed of the
ARM7TDMI core.