Z80182 Zilog., Z80182 Datasheet - Page 106

• Manufacturer Part Number: Z80182
• Description: Z8018x Family MPU
• Manufacturer: Zilog.

Zilog
16550 MIMIC TIMING (Continued)
Note:
These AC parameter values are preliminary and are subject to change without notice.
Clock Generator
The Z80182/Z8L182 ZIP
clock generator to supply system clock. The required
clock is easily generated by connection a crystal to the
external terminals (XTAL,EXTAL). The clock output runs at
half the crystal frequency for X2 mode.
Recommended characteristics of the crystal and the values
for the capacitor are as follows (the values will change with
crystal frequency).
Type of crystal:
Frequency tolerance:
CL, Load capacitance:
3-106
No
19
20
21
Fundamental, parallel type crystal
(AT cut is recommended).
Application dependent.
Approximately 22 pF
(acceptable range is 20-30 pF).
Sym
tRXi
TWxi
tSXa
™
Parameter
Delay from /HRD
RBR to /HRxRDY Inactive
Delay from Write to
/HTxRDY Inactive
Delay From Start to
/HTxRDY Active
uses the Z182 MPUs on-chip
Table M. RCVR FIFO Bytes Other Than First
P R E L I M I N A R Y
Min
Z8L182
20 MHz
RS, equivalent-series resistance:
For PHI > 15 MHz (X2 Mode), it is recommended that an
oscillator be used as input to EXTAL.
C
Figure 117. Circuit Configuration For Crystal
IN
60 Ohms
Max
290
125
3 MPU
Clock Cycles
=C
EXTAL
Crystal
Inputs
XTAL
OUT
=15~22 pF.
Min
Z80182
33 MHz
Max
290
125
3 MPU
Clock Cycles
C1
C2
Z
ILOG
I
NTELLIGENT
DS971820600
Z80182/Z8L182
Units
ns
P
ERIPHERAL