W90N740CDG Nuvoton Technology Corporation of America, W90N740CDG Datasheet - Page 56

• Manufacturer Part Number: W90N740CDG
• Description: IC MCU ARM7 TDMI 176-LQFP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: W90r

Specifications of W90N740CDG

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 80MHz
• Connectivity: EBI/EMI, Ethernet, UART/USART, USB
• Peripherals: DMA, POR, WDT
• Number Of I /o: 21
• Program Memory Type: ROMless
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 1.62 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 176-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

tACS [7:5] ：Address set-up before nECS for external I/O bank 0~3
tCOS [4:2]：Chip selection set-up time on nOE or nWBE for external I/O bank 0~3
When ROM/Flash memory bank is configured, the access to its bank stretches chip selection time before
the nOE or new signal is activated.
DBWD [1:0] ：Programmable data bus width for external I/O bank 0~3
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
DBWD [1:0]
tCOS [4:2]
tACS [7:5]
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
- 53 -
W90N740CD/W90N740CDG
WIDTH OF DATA BUS
Publication Release Date: Aug. 18, 2005
Disable bus
16-bit
32-bit
8-bit
MCLK
MCLK
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Revision A6