82C85

FN2976 Rev.0.00

Page 16 of 21

March 1997

FIGURE 13. RESET TIMING (CLK RUNNING WITH F/C LOW-OSC MODE)

(CLK RUNNING-OR STOPPED WITH F/C HIGH EFI MODE)

FIGURE 14. RESET TIMING (OSCILLATOR STOPPED, F/C LOW)

NOTE: CLK, CLK50, PCLK Remain in the High State until RES goes high and 8192 valid oscillator cycles have been registered by the 82C85

internal counter (TOST time period). After RES goes high and CLK, CLK50, PCLK become active, the RESET output will remain high

for minimum of 16 CLK cycles (TRST).

Timing Waveforms (Continued)

RES

CLK

RESET

(21) TSHSL

(17)

TI1HCL

(36)

TCLIL

(42)

TRST

(36)

TCLIL

(17)

TI1HCL

RES

(21) TSHSL

CLK

RESET

OSCILLATOR

STARTUP

TIME

X1

(39)

TOST

8192

CYCLES

(42)

TRST

(36)

TCLIL