aduc7030 Analog Devices, Inc., aduc7030 Datasheet - Page 40

• Manufacturer Part Number: aduc7030
• Description: Integrated Precision Battery Sensor For Automotive
• Manufacturer: Analog Devices, Inc.

ADuC7030/ADuC7033
ADUC7030/ADUC7033 KERNEL
The ADuC7030/ADuC7033 features an on-chip Kernel resident
in the top 2kBytes of the Flash/EE Code space. After any reset
event, this kernel copies the factory calibrated data from the
manufacturing data space, into the various on-chip peripherals.
The peripherals calibrated by the Kernel are as follows:
Power Supply Monitor (PSM)
Precision, Oscillator
Low Power, Oscillator
REG_AVDD/ REG_DVDD
Low Power Voltage Reference
Normal Mode Voltage Reference
Current ADC (Offset and Gain )
Voltage/ Temperature ADC (Offset and Gain )
User MMRs that can be modified by the kernel and differ from
their POR default values are as follows:
R0-R15
GP0CON/GP2CON
SYSCHK
ADCMDE/ADC0CON
FEE0ADR/FEE0CON/FEESIG
HVDAT/HVCON
HVCFG0/1
T3LD
Rev. PrE | Page 40 of 150
The ADuC7030/ADuC7033 also features an On-Chip LIN
downloader. The operation of this download is detailed in
ADuC7030/ADuC7033 Series Flash/EE Programming via LIN
Technote.
A flow chart showing the execution of the kernel is shown in
Figure 13.
The current revision of the Kernel may be derived from
SYSSER1, as described in Table 93.
For the duration of Kernel execution, the Watchdog Timer is
active with a timeout period of 30ms. This ensures that if an
error occurs in the Kernel, the ADuC7030/ADuC7033 will be
reset. After a POR reset, the Watchdog timer is disabled once
the Kernel code is exited. After any other reset, the Watchdog
timer maintains user code configuration for the period of the
Kernel, and is refreshed just prior to Kernel exit. A minimum
watchdog period of 30ms is required. If LIN download mode is
entered the Watchdog is periodically refreshed.
Normal Kernel execution time, excluding LIN Download, is
approximately 5ms.
It is only possible to leave LIN download mode via a Reset.
SRAM is not modified during normal Kernel execution. SRAM
is modified during LIN download Kernel execution.
Preliminary Technical Data