w925e625 ETC-unknow, w925e625 Datasheet - Page 2

• Manufacturer Part Number: w925e625
• Description: 8-bit Cid Microcontroller
• Manufacturer: ETC-unknow

1. GENERAL DESCRIPTION
The W925E/C625 is an all in one single 8-bit micro-controller with widely used Calling Identity Delivery
(CID) function. The 8-bit CPU core is based on the 8051 family; therefore, all the instructions are
compatible to the Turbo 8051 series. The CID part consisted of FSK decoder, DTMF receiver, CPE*
Alert Signal (CAS) detector and Ring detector. Also built-in DTMF generator and FSK generator with
baud rate 1200 bps (bits/sec). Using W925E/C625 can easily implement the CID adjunct box and the
feature phone or Short Message Service (SMS) phone with CID function. The main features are listed
in the next section.
2. FEATURES
APPLICATION: The SMS phone with CID function and CID adjunct box.
CPU: 8-bit micro-controller is similar to the 8051 family.
Dual-clock operation:
ROM: 64K bytes internal flash EEPROM/MASK ROM type.
RAM:
LCD: dot matrix control method.
CID:
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EEPROM type operating voltage:
to 3.6V be selected, the C operating range is from 2.4 to 3.6V, else if 3.0 to 5.5V be selected,
the C operating range is from 3.0 to 5.5V.
MASK type operating voltage:
Main oscillator: 3.58MHz crystal for CID and DTMF function. And built-in RC oscillator.
Sub oscillator: 32768Hz crystal.
Main and sub oscillators are enable/disable by bit control individually.
Up 64K bytes for program ROM.
Total 64K bytes for look-up table ROM.
256 bytes on chip scratch-pad RAM.
4K bytes on chip RAM for MOVX instruction.
224 bytes on chip LCD RAM.
1792 dots: 56 Segments x 32 Common, 1/5 bias.
Compatible with Bellcore TR-NWT-000030 & SR-TSV-002476, British Telecom(BT) SIN227,
U.K. Cable Communication Association(CCA) specification.
FSK modulator/demodulator: for Bell 202 and ITU-T V.23 FSK with 1200-baud rate.
CAS detector: for dual tones of Bellcore CAS and BT Idle State and Loop State Dual Tone
Alert Signal (DTAS).
CID: 3.0 to 5.5V.
CID: 3.0 to 5.5V.
C: Depend on the operating vol. option. Either 2.4 to 3.6V or 3.0 to 5.5V for operating. If 2.4
C: 2.2 to 5.5V.
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W925E/C625