Comparison between s3c2416 and S3C2440

Samsung's latest 2416 chip has an overwhelming advantage over 2440, making it the perfect replacement for 2440.

1.
Performance and support for video playback capabilities: 2416 clock speed 2440 MHz and 2416 are the same, but 2440 is the arm926jes kernel, which is an enhanced version of ARM920T. The speed of governance is much faster, especially in terms of image, video, and image playback capabilities: 2416 is under 1024x768, and can perfectly support MPEG4, Avi, DivX, mpeg1, MPEG2, and other video files in VGA format, the transfer rate reaches 25 FPS. Under 1024x768, you can play the video in full screen. The effect is good. In contrast, 2440 only supports the CIF format, and it does not work well for MPEG2/MPEG4 decoding. In the case of 800xlarge, it cannot achieve full-screen CIF playback. 2416 can be under X to achieve 30 FPS static image display capability. Under 24 bits, the effect is very good. Although 2416 compared to omap3530, 6410, Cortex
A8 and other chips have poor performance, but 2416 of the above price is their 1/5, which is currently the first choice for low-cost ARM9.

2.
Display: 2416 supports 2D image acceleration and the maximum resolution is 1024x768. At the same time, 2416 has bitblt
The two-layer pixel display function is similar to the two-layer pixel display function. In terms of pixel display and capturing, there is no big difference between independent 2D graphics acceleration graphics, such as sm502. While 2440 does not accelerate 2D images, it can only support up to 800x480 (not blinking). Therefore, in terms of display, 2440 has many defects and must be supported through external 2D graphics acceleration, for example, sm502 extension (see sam2442edk ).

3.
Memory: 2416 supports mddr, lpddr, DDR2 and other types of memory, up to 128 MB, and 2440 only supports SDR
Therefore, in terms of data processing, 2416 has more advantages than 2440.

4.
Nand flash: 2416 supports nandflash for large-capacity and large pages, such as MLC and SLC, with a maximum of 4096 bytes/page. Therefore, in principle, nandflash with the highest capacity can be mounted without capacity restrictions. 2440 supports only 512 bytes of nandflash. MLC is not supported, so the capacity is greatly limited.

5.
SD/MMC: 2416 supports two-way high-speed SD and mmccards. The protocol is 4.0 protocol, so it is compatible with most high-speed SD cards and mmccards on the market. Capacity is not limited. However, 2440 only supports SD/mmccards of the 2.0 protocol. Therefore, it cannot be compatible with the current market high-speed SD cards and is powerless for large-capacity SD cards.

6.
Startup: 2416 supports irom start, nandflash, and srom start. In particular, irom boot makes it very convenient to start from the peripheral SD/MMC. Programs, kernels, and bootloader can be directly placed on the SD card without burning into nandflash. This greatly accelerates the development of drivers and programs. In contrast, 2440 only supports srom and nandflash boot, and cannot meet the current development requirements.

7.
Serial Port: 2416 supports four high-speed asynchronous serial ports, one of which can be configured as an IrDA infrared port, and the other 2440 can only support three asynchronous serial ports.

8.
USB interfaces: 2416 supports USB 2.0 High-Speed interfaces with a maximum speed of 480 Mbps, while 2440 supports only 12 Mbps full speed, in particular, the switch between the USB host and slave must be completed through hardware jumper settings and software settings, and 2416 supports the OTG mode to automatically adjust the host and slave based on external devices. Because USB
Is 2.0 protocol, so 2416 USB can be expanded through external USB hub.

9.
Price: 2416 the current retail price is 38 RMB (5.5 USD), while 2440 is 42rmb
(2416 USD), so has a great advantage in terms of price.

10.
Overall external BOM cost: 2416 because DDR2 SDRAM and MLC nandflash are supported, the external BOM cost can be reduced to a very low level. The same interface is 2440, which can basically reduce the BOM cost by 30%.