HCSXXX Datasheet, PDF (20/28 Pages) Microchip Technology – Memory Programming Specification

HCSXXX
5.3 Timing Requirements for Program/Verify Mode – Decoders
AC/DC CHARACTERISTICS
Sym
Characteristics
HCS500
FCLK Clock frequency
TACK Decoder acknowledge time
TADDR Address validate time
TCLKH Clock high time
TCLKL Clock low time
TCMD Command validate time
TDATA Command last bit to data first bit
TDS
Data hold time
TREQ Command request time
TRESP Acknowledge time
TSTART Command request to first command bit
HCS512
TACK Acknowledge time
TACKH Acknowledge duration
TCLKH Clock high time
TCLKL Clock low time
TPH1 Hold Time 1
TPH2 Hold Time 2
TPS
Program mode setup time
HCS515
TACK Command acknowledge time
TCLKH Clock high time
TCLKL Clock low time
TDATA Command last bit to data first bit
TDS
Data hold time
TREQ Command request time
TRESP Acknowledge time
TSTART Command request to first command bit
TWTH Acknowledge respond time
TWTL Clock low to next command
* Depends on decoder status.
Standard Operating Conditions (unless otherwise
stated)
Operating Temperature +25°C ± 5°C
Operating Voltage
4.5V ≤ VDD ≤ 5.5V
Sugg.
Value
Min
Max Units
Conditions/Comments
— 500 25000 Hz
—
30 µs
—
—
10 µs
— 20 1000 µs
— 20 1000 µs
—
—
10 µs
—
—
10 µs
—
14
— µs
— 0.015 500 ms
—
—
1 ms
— 20 1000 µs
—
—
80 ms FOSC = 4 MHZ
—
1
—
µs FOSC = 4 MHZ
— 0.05 320 µs FOSC = 4 MHZ
— 0.05 320 µs FOSC = 4 MHZ
—
8
128 ms FOSC = 4 MHZ
— 0.05 320 µs FOSC = 4 MHZ
—
1
64 ms FOSC = 4 MHZ
*
30 240 ms
100 20 1000 µs
100 20 1000 µs
100 10 1000 µs
50 14 1000 µs
* 0.005 500 ms
100 10 1000 µs
100 20 1000 µs
100 20 1000 µs
100 10
— µs
DS41256A-page 20
Preliminary
 2004 Microchip Technology Inc.