M052LAN Nuvoton Technology Corporation of America, M052LAN Datasheet - Page 341

• Manufacturer Part Number: M052LAN
• Description: IC MCU 32BIT 8KB FLASH 48LQFP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro M051™r

Specifications of M052LAN

• Core Processor: ARM Cortex-M0
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 40
• Program Memory Size: 8KB (8K 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 8x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

NuMicro M051
Insert Idle Cycle
When EBI accessing continuously, there may occur bus conflict if the device access time is much
slow with system operating. NuMicro M051
During idle cycle, all control signals of EBI are inactive. The Figure 6.12-6 shows the idle cycle
waveform.
There are two conditions that EBI can insert idle cycle by timing control:
1.
2.
By setting ExtIW2X and ExtIR2R of register EXTIME, the time of idle cycle can be specified from
0~15 MCLK.
After write access
After read access and before next read access
Figure 6.12-6 Timing Control Waveform for Insert Idle Cycle
™
Series Technical Reference Manual
- 341 -
™
supply additional idle cycle to solve this problem.
Publication Release Date: Sept 14, 2010
Revision V1.2