M054ZAN Nuvoton Technology Corporation of America, M054ZAN Datasheet - Page 121
M054ZAN
Manufacturer Part Number
M054ZAN
Description
IC MCU 32BIT 16KB FLASH 33QFN
Manufacturer
Nuvoton Technology Corporation of America
Series
NuMicro M051™r
Specifications of M054ZAN
Core Processor
ARM Cortex-M0
Core Size
32-Bit
Speed
50MHz
Connectivity
I²C, IrDA, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
24
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 5.5 V
Data Converters
A/D 5x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
33-WFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Part Number:
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Clock status Register (CLKSTATUS)
NuMicro M051
These bits of this register are used to monitor if the chip clock source stable or not, and if clock
switching failed.
CLK_SW_FAIL
Bits
[31:8]
[7]
[6:5]
[4]
Register
CLKSTATUS
31
23
15
7
Descriptions
Reserved
CLK_SW_FAIL
Reserved
OSC22M_STB
Offset
CLK_BA+0C R/W
30
22
14
6
Reserved
R/W
™
-
Clock switch fail flag
1 = Clock switch if fail
0 = Clock switch if success
This bit will be set when target switch clock source is not stable.
Write 1 to clear this bit to zero.
-
OSC22M (Internal 22.1184 MHz) clock source stable flag (Read Only)
1 = OSC22M clock is stable
0 = OSC22M clock is not stable or disable
29
21
13
Series Technical Reference Manual
5
OSC22M_STB OSC10K_STB
Description
Clock status monitor Register
28
20
12
4
- 121 -
Reserved
Reserved
Reserved
27
19
11
3
Publication Release Date: Sept 14, 2010
PLL_STB
26
18
10
2
Reserved
25
17
9
1
Revision V1.2
XTL12M_STB
Reset Value
0x0000_00X
X
24
16
8
0
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