Maxim DS5001FP - Manuals

DS5001FP 6 of 26 INSTRUCTION SET The DS5001FP executes an instruction set that is object code-compatible with the industry standard 8051microcontroller. As a result, software development packages such as assemblers and compilers that havebeen written for the 8051 are compatible with the DS5001FP. A ...

DS5001FP 9 of 26 Figure 5 illustrates a typical memory connection for a system using a 128kB SRAM. Note that in thisconfiguration, both program and data are stored in a common RAM chip Figure 6 shows a similar systemwith using two 32kB SRAMs. The byte-wide address bus connects to the SRAM address li...

DS5001FP 10 of 26 Figure 6. DS5001FP CONNECTION TO 64k x 8 SRAM POWER MANAGEMENT The DS5001FP monitors V CC to provide power-fail reset, early warning power-fail interrupt, and switch over to lithium backup. It uses an internal bandgap reference in determining the switch points. These arecalled V PF...

DS5001FP 12 of 26 DC CHARACTERISTICS (continued) (T A = 0°C to +70°C; V CC = 5V ±10%) PARAMETER SYMBOL MIN TYP MAX UNITS NOTES Input Leakage Current0.45 < V IN < V CC (Port 0, MSEL) I IL +10 µA RST Pulldown Resistor(0°C to +70°C) R RE 40 150 k W RST Pulldown Resistor(-40°C to +85°C) R RE 30 18...

DS5001FP 13 of 26 AC CHARACTERISTICSEXPANDED BUS MODE TIMING SPECIFICATIONS (T A = 0°C to +70°C; V CC = 5V ±10%) # PARAMETER SYMBOL MIN MAX UNITS 1 Oscillator Frequency 1/ t CLK 1.0 16 MHz 2 ALE Pulse Width t ALPW 2t CLK - 40 ns 3 Address Valid to ALE Low t AVALL t CLK - 40 ns 4 Address Hold After A...

DS5001FP 16 of 26 AC CHARACTERISTICS (continued) EXTERNAL CLOCK DRIVE (T A = 0°C to +70°C; V CC = 5V ±10%) # PARAMETER SYMBOL MIN MAX UNITS 28 External Clock-High Time at 12MHzat 16MHz t CLKHPW 2015 ns 29 External Clock-Low Time at 12MHzat 16MHz t CLKLPW 2015 ns 30 External Clock-Rise Time at 12MHza...

DS5001FP 17 of 26 AC CHARACTERISTICS (continued) POWER CYCLE TIME (T A = 0°C to +70°C; V CC = 5V ±10%) # PARAMETER SYMBOL MIN MAX UNITS 32 Slew Rate from V CCMIN to V LI t F 130 µs 33 Crystal Startup Time t CSU (Note 9) 34 Power-On Reset Delay t POR 21,504 t CLK POWER CYCLE TIMING

DS5001FP 18 of 26 AC CHARACTERISTICS (continued) SERIAL PORT TIMING, MODE 0 (T A = 0°C to +70°C; V CC = 5V ±10%) # PARAMETER SYMBOL MIN MAX UNITS 35 Serial-Port Clock-Cycle Time t SPCLK 12t CLK µs 36 Output-Data Setup to Rising-Clock Edge t DOCH 10t CLK - 133 ns 37 Output-Data Hold After Rising-Cloc...

DS5001FP 19 of 26 AC CHARACTERISTICS (continued) BYTE-WIDE ADDRESS/DATA BUS TIMING (T A = 0°C to +70°C; V CC = 5V ±10%) # PARAMETER SYMBOL MIN MAX UNITS 40 Delay to Byte-Wide Address Valid from CE1 , CE2 , or CE1N Low During Op Code Fetch t CE1LPA 30 ns 41 Pulse Width of CE 1-4, PE 1-4 or CE1N t CEP...

DS5001FP 20 of 26 BYTE-WIDE BUS TIMING RPC AC CHARACTERISTICS, DBB READ (T A = 0°C to +70°C; V CC = 5V ±10%) # PARAMETER SYMBOL MIN MAX UNITS 54 CS , A 0 Setup to RD t AR 0 ns 55 CS , A 0 Hold After RD t RA 0 ns 56 RD Pulse Width t RR 160 ns 57 CS , A 0 to Data-Out Delay t AD 130 ns 58 RD to Data-Ou...

DS5001FP 21 of 26 RPC AC CHARACTERISTICS, DBB WRITE (T A = 0°C to +70°C; V CC = 5V ±10%) # PARAMETER SYMBOL MIN MAX UNITS 60 CS , A 0 Setup to WR t AW 0 ns 61A CS , Hold After WR t WA 0 ns 61B A 0 , Hold After WR t WA 20 ns 62 WR Pulse Width t WW 160 ns 63 Data Setup to WR t DW 130 ns 64 Data Hold A...

DS5001FP 26 of 26 REVISION HISTORY The following represent the key differences between 112795 and 073096 version of the DS5001FP datasheet. Please review this summary carefully. 1) Change V CC02 specification from V LI - 0.5 to V LI - 0.65 (PCN F62501). 2) Update mechanical specifications. The follo...