NUC140LE3CN Nuvoton Technology Corporation of America, NUC140LE3CN Datasheet - Page 523

• Manufacturer Part Number: NUC140LE3CN
• Description: IC MCU 32BIT 128KB FLASH 48LQFP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro™ NUC100r

Specifications of NUC140LE3CN

• Core Processor: ARM Cortex-M0
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: CAN, I²C, IrDA, LIN, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
• Number Of I /o: 31
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 16K 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

For 8-bit data width, chip system address bit [15:0] is used as the device’s address [15:0]. For 16-
bit data width, chip system address bit [16:1] is used as the device’s address [15:0] and chip
system address bit [0] is useless.
When system access data width is lager than EBI data width, EBI controller will finish a system
access command by operating EBI access more than once. For example, if system requests a
32-bit data through EBI device, EBI controller will operate accessing four times when setting EBI
data width with 8-bit.
EBI bit width
16-bit
8-bit
NuMicro™ NUC130/NUC140 Technical Reference Manual
External Bus Interface
Figure 5-113 Connection of 16-bit EBI Data Width with 16-bit Device
Figure 5-114 Connection of 8-bit EBI Data Width with 8-bit Device
AD[15:8]
AD[7:0]
System address (AHBADR)
nWE
nCS
nRE
ALE
AHBADR[15:0]
AHBADR[16:1]
AD[7:0]
- 523 -
latch device
Address
AD[7:0]
D
En
Q
Publication Release Date: June 14, 2011
EBI address (AD)
Addr[15:8]
Addr[7:0]
nCS
nOE
nWE
Data[7:0]
64K x 8-bit
AD[15:0]
AD[15:0]
SRAM
Revision V2.01