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SM320C25GBM 数据表(PDF) 3 Page - Texas Instruments |
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SM320C25GBM 数据表(HTML) 3 Page - Texas Instruments |
3 / 38 page SMJ320C25, SMJ320C2550 DIGITAL SIGNAL PROCESSOR SGUS007D – AUGUST 1988 – REVISED OCTOBER 2001 3 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 Terminal Functions SIGNALS I/O/Z† DEFINITION VCC I 5-V supply pins VSS I Ground pins X1 0 Output from internal oscillator for crystal X2/CLKIN I Input to internal oscillator from crystal or external clock CLKOUT1 0 Master clock output (crystal or CLKIN frequency/4) CLKOUT2 0 A second clock output signal D15–D0 I/O/Z 16-bit data bus D15 (MSB) through D0 (LSB). Multiplexed between program, data, and I/0 spaces. A15–A0 O/Z 16-bit address bus A15 (MSB) through A0 (LSB) PS,DS,IS O/Z Program, data, and I/O space select signals R/W O/Z Read / write signal STRB O/Z Strobe signal RS I Reset input INT2–INT0 I External user interrupt inputs MP/MC I Microprocessor/microcomputer mode select pin MSC 0 Microstate complete signal IACK 0 Interrupt acknowledge signal READY I Data ready input. Asserted by external logic when using slower devices to indicate that the current bus transaction is complete. BR 0 Bus request signal. Asserted when the SMJ320C25 requires access to an external global data memory space. XF 0 External flag output (latched software-programmable signal) HOLD 1 Hold input. When asserted, SMJ320C25 goes into an idle mode and places the data, address, and control lines in the high-impedance state. HOLDA 0 Hold acknowledge signal SYNC I Synchronization input BIO I Branch control input. Polled by BIOZ instruction DR I Serial data receive input CLKR I Clock for receive input for serial port FSR I Frame synchronization pulse for receive input DX O/Z Serial data transmit output CLKX I Clock for transmit output for serial port FSX I/O/Z Frame synchronization pulse for transmit. Configurable as either an input or an output. † I/O/Z denotes input/output/high-impedance state. |
类似零件编号 - SM320C25GBM |
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类似说明 - SM320C25GBM |
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