MC68040RC25V Freescale Semiconductor, MC68040RC25V Datasheet - Page 207

• Manufacturer Part Number: MC68040RC25V
• Description: IC MICROPROCESSOR 32BIT 179-PGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68040RC25V

• Processor Type: M680x0 32-Bit
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 179-PGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

7.10 RESET OPERATION
An external device asserts the reset input signal (RSTI) to reset the processor. When
power is applied to the system, external circuitry should assert RSTI for a minimum of 10
BCLK cycles after V
the power-on reset operation, illustrating the relationships among V
selects, and bus signals. The BCLK and PCLK clock signals are required to be stable by
the time V
MOTOROLA
CC
Figure 7-43. Snooped Long-Word Write, Memory Inhibited
reaches the minimum operating specification. The V
SIZ1, SIZ0
SC1, SC0
*
AM_BG
TT1, TT0
AM_BR
D31–D0
A31–A0
AM indicates the alternate bus master.
BCLK
R/W
BR
BG
TA
BB
TS
MI
*
*
CC
Freescale Semiconductor, Inc.
is within tolerance. Figure 7-44 is a functional timing diagram of
C1
For More Information On This Product,
C2
Go to: www.freescale.com
MEMORY INHIBITED FROM RESPONDING
M68040 USER’S MANUAL
ALTERNATE MASTER
LONG-WORD WRITE
C3
TA DRIVEN BY PROCESSOR
DATA WRITTEN BY ALTERNATE BUS MASTER
C4
C5
C6
IH
PROCESSOR
levels of the clocks
CC
, RSTI, mode
7- 65