W90N740CDG Nuvoton Technology Corporation of America, W90N740CDG Datasheet - Page 57

• 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: -

Clock Skew Control Register （CKSKEW）
DLH_CLK_REF [31:16]: Latch DLH_CLK clock tree by HCLK positive edge. (Read Only)
SWPON [8]: SDRAM Initialization by Software trigger
Set this bit will issue a SDRAM power on default setting command, this bit will be auto-clear by
hardware.
REGISTER
CKSKEW
31
23
15
7
0xFFF7.1F00
DLH_CLK_SKEW
ADDRESS
30
22
14
6
29
21
13
5
Fig 7.3.6 External I/O write operation timing
R/W
R/W
RESVERED
Clock skew control register
DLH_CLK_REF
DLH_CLK_REF
28
20
12
4
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W90N740CD/W90N740CDG
DESCRIPTION
27
19
11
3
26
18
10
MCLK_O_D
2
25
17
9
1
RESET VALUE
0xXXXX.0038
SWPON
24
16
8
0