Philips Semiconductors

Product data

80C552/83C552

Single-chip 8-bit microcontroller with 10-bit A/D,

capture/compare timer, high-speed outputs, PWM

2002 Sep 03

14

24 MHz version

24 MHz CLOCK

VARIABLE CLOCK

SYMBOL

FIGURE

PARAMETER

MIN

MAX

MIN

MAX

UNIT

2

Oscillator frequency

3.5

24

MHz

2

ALE pulse width

43

ns

2

Address valid to ALE low

17

ns

2

Address hold after ALE low

17

ns

2

ALE low to valid instruction in

102

ns

2

ALE low to PSEN low

17

ns

2

PSEN pulse width

80

ns

2

PSEN low to valid instruction in

65

ns

2

Input instruction hold after PSEN

0

0

ns

2

Input instruction float after PSEN

17

ns

2

Address to valid instruction in

128

ns

2

PSEN low to address float

10

10

ns

Data Memory

3

RD pulse width

150

ns

4

WR pulse width

150

ns

3

RD low to valid data in

118

ns

3

Data hold after RD

0

0

ns

3

Data float after RDxs

55

ns

3

ALE low to valid data in

183

ns

3

Address to valid data in

210

ns

3, 4

ALE low to RD or WR low

75

175

ns

3, 4

Address valid to WR low or RD low

92

ns

4

Data valid to WR transition

12

ns

4

Data before WR

162

ns

4

Data hold after WR

17

ns

3

RD low to address float

0

0

ns

3, 4

RD or WR high to ALE high

17

67

ns

External Clock

5

17

17

ns

5

17

17

ns

5

5

20

ns

5

5

20

ns

6

Serial port clock cycle time

0.5

µs

6

Output data setup to clock rising edge

283

ns

6

Output data hold after clock rising edge

23

ns

6

Input data hold after clock rising edge

0

0

ns

6

Clock rising edge to input data valid

283

ns

NOTES:

1. Parameters are valid over operating temperature range unless otherwise specified.

2. Load capacitance for port 0, ALE, and PSEN = 100 pF, load capacitance for all other outputs = 80 pF.

3. These values are characterized but not 100% production tested.