M058ZAN Nuvoton Technology Corporation of America, M058ZAN Datasheet - Page 36

• Manufacturer Part Number: M058ZAN
• Description: IC MCU 32BIT 32KB FLASH 33QFN
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro M051™r

Specifications of M058ZAN

• 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: 32KB (32K 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: -

System Reset Source Register (RSTSRC)
This register provides specific information for software to identify this chip’s reset source from last
operation.
Register
RSTSRC
Bits
[31:8]
[7]
[6]
[5]
RSTS_CPU
31
23
15
7
NuMicro M051
Offset
GCR_BA+04
Descriptions
Reserved
RSTS_CPU
Reserved
RSTS_MCU
Reserved
30
22
14
6
R/W
R/W
RSTS_MCU
Reserved
The RSTS_CPU flag is set by hardware if software writes CPU_RST (IPRSTC1[1]) with a
“1” to rest Cortex-M0 CPU kernel and Flash memory controller(FMC).
1= The Cortex-M0 CPU kernel and FMC are reset by software set CPU_RST to 1.
0= No reset from CPU
This bit is cleared by writing 1 to itself.
Reserved
The RSTS_MCU flag is set by the “reset signal” from the MCU Cortex_M0 kernel to
indicate the previous reset source.
1= The MCU Cortex_M0 had issued the reset signal to reset the system by software
writing 1 to bit SYSRESTREQ(AIRCR[2], Application Interrupt and Reset Control
Register) in system control registers of Cortex_M0 kernel.
29
21
13
5
™
Description
System Reset Source Register
Series Technical Reference Manual
RSTS_BOD
28
20
12
4
- 36 -
Reserved
Reserved
Reserved
RSTS_LVR
27
19
11
3
Publication Release Date: Sep 14, 2010
RSTS_WDT
26
18
10
2
RSTS_RES
ET
25
17
9
1
Revision V1.2
Reset Value
0x0000_00XX
RSTS_POR
24
16
8
0