Z32AN00NW200SG Zilog, Z32AN00NW200SG Datasheet - Page 112

• Manufacturer Part Number: Z32AN00NW200SG
• Description: IC ARM922T MCU 200MHZ 256-BGA
• Manufacturer: Zilog
• Series: Encore!® 32r

Specifications of Z32AN00NW200SG

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, IrDA, SmartCard, SPI, UART/USART, USB OTG
• Peripherals: DMA, LCD, Magnetic Card Reader, POR, PWM, WDT
• Number Of I /o: 76
• Program Memory Type: ROMless
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 1.71 V ~ 3.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-LBGA
• For Use With: 269-4713 - KIT DEV ENCORE 32 SERIES
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: 269-4717

Z32AN Series Data Sheet
11.9 RTC Locking
11.9.1 Address FFFFC00Ch: RTC_APB_STA – RTC APB Status Register
DS0200-003
Access to the RTC is locked upon a system reset of the main system, or an invalid write to the RTC_LCK2.
While locked, writes are disabled to the RTC except to RTC_LCK1 and RTC_LCK2. APB may be identified
as “unlocked” by reading RTC_APB_STA.APB_UNLOCKED. The lock is provided to prevent spurious
writes during power up and down of the main system.
30:00
Bits
31
FFFFC00Ch
FFFFC694h
FFFFC968h
Address
Type
RO
RO
Reset
1
0
Description
APB Unlocked (APB_UNLOCKED): Indicates if the APB bus is locked or unlocked.
Security accesses and secure memory are not possible if APB is locked.
Reserved
RTC_APB_STA
RTC_LCK1
RTC_LCK2
Register
Figure 11-2: APB Lock State Machine
Description
RTC APB Status Register
RTC Lock 1 Register
RTC Lock 2 Register
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