83C145 Datasheet, PDF (36/40 Pages) NXP Semiconductors – Microcontrollers for TV and video MTV

Philips Semiconductors
Microcontrollers for TV and video (MTV)
Product specification
83C145; 83C845
83C055; 87C055
20 AC CHARACTERISTICS
V_DD = 5 V ±10%; T_amb = 0 to +70 °C; all voltages with respect to V_SS; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS MIN. TYP. MAX. UNIT
1/t_CLCL
t_CHCX
t_CLCX
t_CLCH
t_CHCL
1/t_VCLCL
t_VCOH − t_VCOL
t_VCOH1 − t_VCOH2
t_VCOL1 − t_VCOL2
XTAL frequency
XTAL1 clock HIGH time
XTAL1 clock LOW time
XTAL1 clock rise time
XTAL1 clock fall time
VCLK frequency
Rise versus fall time skew on any one of
VID2 to VID0, VCTRL and BF
Rise time skew between any two of
VID2 to VID0, VCTRL and BF
Fall time skew between any two of
VID2 to VID0, VCTRL and BF
note 1
note 2
note 3
6
−
12
MHz
20 −
−
ns
20 −
−
ns
−
−
20
ns
5
−
20
ns
5
−
8
MHz
−
−
40
ns
−
−
30
ns
−
−
30
ns
Notes
1. The 83C055 is tested at its maximum XTAL frequency, but not at any other (lower) rate.
2. These parameters apply only when an external clock signal is used.
3. These parameters assume equal loading at C_L = 100 pF, for all the referenced outputs. These parameters are
specified but not tested.
1996 Mar 22
36