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诺基压8801 EDGE手机拆解

52RD.com 2006年5月8日 Semiconductor Insights            评论:5条 查看 我来说两句

Tear Down of Nokia 8801 EDGE-based handset

This handset takes advantage of the latest memory technology.
The Nokia 8801 is a mobile handset with many different capabilities. It’s encased in high-end materials, including stainless steel and reinforced glass. Among its many features are a compelling sliding design, SVGA camera, high-resolution display, EDGE high-speed data, Bluetooth, speakerphone, and an FM radio.

The 8801’s design features a stainless steel case that slides open to reveal the phone’s keypad. Reinforced glass protects a 208- by 208-pixel LCD that supports 262,000 colors. When the phone is in the open position, a five-way center button above the dial pad controls most of the handset’s functions. Sliding the case open also reveals an SVGA (800- by 600-pixel) camera that’s housed on the rear of the phone. It’s designed with an internal antenna, and a port on the bottom to handle charging. The lithium-ion battery is rated for up to 3 hrs. of digital talk time, and up to 192 hrs. of digital standby time.

The 8801’s address book can store multiple phone numbers, as well as physical and e-mail addresses. Meanwhile, the built-in speakerphone makes it easy to talk without having the phone to your ear. Polyphonic ringtones are included, and users can use their favorite music or recorded voices in MP3 or AAC format as ringtones, as well. A vibrate mode is also provided. Picture ID lets users assign specific ringtones to particular callers.

With MMS (multimedia messaging service) support, the 8801 can send picture, video, and text messages. Instant messaging is also supported, and the phone ships with a built-in e-mail client that supports POP3 and IMAP protocols.

Getting on the Internet is easy with the 8801, as it supports the GPRS data protocol, as well as the new, high-speed EDGE wireless data service. When used with a carrier data plan and the phone’s Bluetooth data capability, the phone can operate as a wireless modem for laptops and PDAs. There’s also a built-in Web browser for downloads and mobile Web browsing. T9 text entry, a technology that makes it easier to enter words and text, is built into the unit, a plus for mobile e-mail and text-messaging users.

The 8801 handles PC synchronization over Bluetooth, which means that users can manage and synchronize their contacts, calendar, and other data with their PC. Nokia’s PC Suite application simplifies this process. A number of useful software tools are bundled with the 8801, including a voice memo recorder, a to-do list, a calculator, a calendar, and an alarm clock.

The SVGA camera captures stills and video clips to the phone’s internal memory. The 8801 has music lovers covered, too, with its ability to store MP3- and AAC-format tunes. Or, the integrated FM tuner can be used. The handset is also a powerful gaming companion with support for 3D graphics. A Bluetooth stereo headset or the included wired stereo headset can be connected.

The 8801, which run son the GSM/GPRS/EDGE 850/1800/1900 frequencies, measures 1.77 by 4.21 by 0.74 in. when closed and weighs 4.73 oz. Accessories include the wired stereo headset, a desk stand, a travel charger, an application CD, and an 8801 story book.

This handset is interesting due to the memory components Nokia chose (Fig. 1). It’s not unusual for Nokia to employ Samsung memory. For instance, in the Nokia 6630, separate Samsung NOR and NAND/DRAM components are employed.


1. The memory in the Nokia 8801 handset comes from Samsung.

While this is the first time that we’ve seen Samsung’s OneNAND in a commercially available product, Samsung informed us that OneNAND now ships in more than 120 handset designs. By combining the NOR, NAND, and mobile SDRAM in a single component, Nokia is able to realize a more cost effective solution (Fig. 2).


2. Samsung’s OneNAND memory combines NOR and NAND flash with SDRAM.

A key feature of Samsung’s OneNAND is in the approach taken to store and execute data. The concept takes advantage of both high-speed data read functions, normally associated with NOR flash, and the large storage capabilities associated with NAND flash. For example, the device has a read bandwidth of 108 Mbytes/s, comparable to NOR, while at the same time is offered in densities up to 2 Gbits, reaching the "sweet spot" in mobile devices. In addition, the OneNAND has a write memory speed approaching 9.3 Mbytes/s, exceeding both the NOR and NAND counterparts.

Samsung isn’t the only vendor offering a device that recognizes the benefits of both NAND and NOR flash. Spansion has introduced the MirrorBit ORNAND. The ORNAND professes density up to 1 Gbit, a 50% faster read performance over standard NAND, an 8X faster write performance compared to NOR, and a 2-Mbyte/s transfer rate. A MirrorBit NOR and ORNAND Execute-In-Place (XIP) solution provides a 54% accelerated system boot time compared to a Store-and-Download (SnD) implementation based on SLC NAND. As well, 25% faster application loading over SnD implemented SLC NAND is achieved. Finally, with more functionality being integrated into mobile devices, the solutions offers bandwidth support for multimedia applications, such as MP3 playback, high-res cameras, and video streaming at 30 frames/s using VGA resolution.

(52RD.com)
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