MC68306 Motorola, MC68306 Datasheet - Page 179

• Manufacturer Part Number: MC68306
• Description: Integrated EC000 Processor
• Manufacturer: Motorola

8.11 SERIAL MODULE ELECTRICAL CHARACTERISTICS
(T A = 0 C to 70 C, V CC = 5.0 V 5%, See Note 1)
MOTOROLA
NOTES:
X1/CLK Input Leakage Current
X1/CLK Frequency (see Note 2)
Counter/Timer Clock Frequency (IP2)
1. All voltage measurements are referenced to ground (GND). For testing, all input signals except X1/CLK swing
2. To use the standard baud rates selected by the clock-select register given in Tables 6-5 and 6-6, the X1/CLK
3. IP5–2 for RxC, TxC are not supported in the MC68306.
between 0.4 V and 2.4 V with a maximum transition time of 20 ns. For X1/CLK, this swing is between 0.4 V and
4.4 V. All time measurements are referenced at input and output voltages of 0.8 V and 2.0 V as appropriate.
Test conditions for outputs: C L = 150 pF, R L = 750
frequency should be set to 3.6864 MHz or a 3.6864 MHz crystal should be connected across pins X1/CLK and X2.
A15/DRAMA 14–
A1/DRAMA 0
UDS, LDS
* NOTE: TAS IS A BYTE-ONLY INSTRUCTION, THEREFORE ONLY ONE OF UW, LW AND ONLY ONE CAS WILL BE ASSERTED.
FC0–FC2
CLKOUT
DRAMW
UW, LW
D15–D0
DTACK
RAS
CAS
R/W
OE
AS
Figure 8-11. DRAM Timing – 1-Wait, Test and Set
90
80
Characteristic
MC68306 USER'S MANUAL
to V CC .
79
91
Symbol
f CTC
I X1L
f CLK
Min
2.0
0
92
16.67
Max
2.5
4.0
Unit
MHz
MHz
8- 15
A