Datasheet

1181
SAM4S Series [DATASHEET]
11100F–ATARM–22-Nov-13
Section 12. “ARM Cortex-M4 Processor”
Section 12.5.3 “Power Management Programming Hints”: in 2nd instruction line, replaced “WFE(void)” with
“WFI(void)” to match ‘Wait For Interrupt’ and in 2nd instruction line, replaced “WFE(void)” with “WFI(void)” to match
‘Wait For Interrupt’
Section 12.9.1.2 “CPUID Base Register”: updated ‘Constant’ field description
Section 12.9.1.5 “Application Interrupt and Reset Control Register”: updated ‘VECTCLRACTIVE’ and ‘VECTRESET’
field descriptions
Section 12.9.1.7 “Configuration and Control Register”: updated ‘USERSETMPEND’ field description
Section 12.9.1.16 “MemManage Fault Address Register”: updated ‘ADDRESS’ field description
Section 12.9.1.17 “Bus Fault Address Register”: updated ‘ADDRESS’ field description
Section 12.10.1.1 “SysTick Control and Status”: updated ‘TICKINT’ and ‘ENABLE’ field descriptions
Section 12.10.1.2 “SysTick Reload Value Registers”: updated ‘RELOAD’ field description
Section 12.10.1.3 “SysTick Current Value Register”: updated ‘CURRENT' field description
Section 12.10.1.4 “SysTick Calibration Value Register”: updated register reset value; updated ‘TENMS’ and ‘SKEW’
field descriptions.
Section 12.11.2.2 “MPU Control Register”: updated ‘ENABLE’ field description.
Section 12.11.2.3 “MPU Region Number Register”: updated ‘REGION’ field description.
Updated Section 12.11.2.4 “MPU Region Base Address Register”.
Added Section 12.11.2.6 “MPU Region Base Address Register Alias 1” to Section 12.11.2.11 “MPU Region Attribute
and Size Register Alias 3”.
Corrected “Sterling Pound” symbol (£) to “less than or equal to” symbol (
≤) in operation description in Section 12.6.7
“Saturating Instructions”.
Table 12-30, “Mapping of Interrupts to the Interrupt Variables”: updated count range in “Interrupts” column.
Section 14. “Reset Controller (RSTC)”
Figure 14-3 “General Reset State”: replaced “backup_nreset” with “vddbu_nreset”.
Section 14.4.2.2 “NRST External Reset Control”: replaced “ext_nreset” with “exter_nreset”.
Section 14.4.4.2 “Backup Reset”: replaced “core_backup_reset” with “vddcore_nreset”; reworded content to improve
comprehension.
RSTTYP information corrected in Section 14.4.6 “Reset Controller Status Register”.
Section 14.5.1 “Reset Controller Control Register”: updated EXTRST value 1 description (deleted phrase “and resets
the processor and the peripherals”).
Section 14.5.3 “Reset Controller Mode Register”: inserted sentence “This register can only be written if the WPEN bit
is cleared in the System Controller Write Protection Mode Register (SYSC_WPMR).”
Section 15. “Real-time Timer (RTT)”
Figure 15-1, “Real-time Timer”: replaced “16-bit Divider” with “16-bit Prescaler.
Revised Section 15.4 “Functional Description”.
Section 15.5.4 “Real-time Timer Status Register”: updated RTTINC bit description.
Table 48-1. SAM4S Datasheet Rev. 11100F 29-Jan-14 Revision History (Continued)
Doc. Date Changes