Z90251 Datasheet, PDF (79/97 Pages) Zilog, Inc. – eZVision 200 Television Controllers with OSD

Z90255 ROM and Z90251 OTP
32 KB Television Controller with OSD
71
Figure 18 and Figure 19 illustrate various timing pulses and resultant frequencies
for the 6-bit and 14-bit PWMs.
F6 = XTAL/16/64
XTAL/2
(A) PWM2 = 00H
(B) PWM2 = 01H
(C) PWM2 = 03H
(D) PWM2 = 20H
(E) PWM2 = 3FH
Figure 18 Pulse Width Modulator Timing Diagram, 6 Bit
PS001301-0800