Description:
MS8503DEP designed for the SMS phone applications with the caller ID function. A 6502-based MCU is built-in to control the operation of the entire system. support several I/O interfaces designed for handshaking with the other peripheral devices
■ Including the functionalities of
■ FSK transceiver,
■ a high performance CPE Alerting Tone (CAS) detection,
■ DTMF generation,
■ Ring detection,
■ Low Voltage indication
■ Supporting up to 256K bytes ROM,
■ With up to 4K bytes RAM, the device allows the users to design the product capable of storing more data.
■ Parallel memory interface is
■ to access external memory device up to 512k.
■ The external memory space
■ can be configured as two combinations:
■ only one memory device connected (max. 512K).
■ Two memory devices connected (max. 256K, individually).
Specification:
■ 8-Bit micro-controller built in
■ Operating voltage range: 2.5~5.5V
■ 256K bytes internal ROM
■ 4K bytes internal RAM
■ Power Management
■ Standby mode
■ Stop mode
■ Memory Interface:
■ Parallel Memory Interface.(addressed up to 512K bytes)
■ Serial Memory Interface.
■ Only single crystal (32768Hz)
■ Programmable MCU clock rate
■ High-Speed:
■ 4.194MHz, 2.097MHz, 1.049MHz, and 0.524MHz.
■ Low speed: 32768Hz.
■ Input port and I/O ports interface. (32 I/O + 8 Mutil-I/O)
■ Input port: 8 pins with interrupt option.
■ I/O port A~B: 16 pins I/O ports with non-open drain structure.
■ Open drain I/O port: 4 pins.
■ Heavy driving output port: 4 pins.
■ Multiple-function I/O ports: MPORT0~7.
■ Ring and line reversal detector
■ FSK Transceiver & Carrier detector
■ CAS (CPE Alert Signal)/TAS detector
■ DTMF (Dual Tone Multiple Frequency) generator
■ DTMF Decoder
■ Ringer/Music tone generator
■ Low voltage detector
■ Two 8-Bit general-purposed timers
■ A watchdog timer against deadlock.
■ UART controller
■ Universal synchronous serial Interface (SSI)
■ Priority-based interrupts.
■ LCD driver interface
Application
■ Calling number delivery (CND)
■ Calling name delivery (CNAM) features
■ Caller identification on call waiting (CIDCW) features
■ Corded or Cordless adjunct boxes phone set
■ Short Message Service system.
■ Corded or Cordless Feature phones
■ Other communication systems
Package
■ 128 Pins QFP packaged.