DS87C520MCL Datasheet, PDF (44/44 Pages) Dallas Semiconductor – EPROM/ROM High-Speed Microcontrollers

DS87C520/DS83C520 EPROM/ROM High-Speed Microcontrollers
DATA SHEET REVISION SUMMARY
REVISION
040104
070300
070698
022097
110195
DESCRIPTION
1) Removed “Preliminary” status.
2) Soldering temperature parameter now references JEDEC specification.
3) Added note to absolute maximums clarifying voltages referenced to ground.
4) Updated I_CC, I_IDLE, I_STOP, I_SPBG, I_IL, and I_TL to incorporate errata conditions.
5) Added note clarifying DC electrical test conditions.
6) Added note clarifying V_OH3 specification applies to first clock cycle following the transition.
7) Updated AC and MOVX electrical characteristics with final characterization values.
8) Added t_AVLL2 specification and corrected MOVX timing diagrams to show t_AVLL2 instead of t_AVLL.
1) Corrected P0 pinout description for TQFP package.
2) Clarified point at which reset delay begins.
1) Update PMM operating current estimates
2) Added note to clarify I_IL specification.
3) Added note to prevent accidental corruption of Watchdog Timer count while changing counter length.
4) Changed minimum oscillator frequency to 1MHz when using external crystal.
5) Changed RST pulldown resistance from 170kW to 200kW maximum.
6) Corrected “Data memory write with stretch” diagrams to show falling edge of ALE coincident with
rising edge of C3 clock.
1) Update ALE pin description.
2) Add note pertaining to erasure window.
3) Add note pertaining to internal MOVX SRAM.
4) Change Note 10 from RST = 5.5V to RST = V_CC.
5) Change serial port mode 0 timing diagram label from t_QVXL to t_QVXH.
Preliminary release.
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