MC68HC000EI12 Freescale Semiconductor, MC68HC000EI12 Datasheet - Page 83

• Manufacturer Part Number: MC68HC000EI12
• Description: IC MPU 16BIT 10MHZ 68-PLCC
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC000EI12

• Processor Type: M680x0 32-Bit
• Speed: 12MHz
• Voltage: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Family Name: M68000
• Device Core: ColdFire
• Device Core Size: 16/32Bit
• Frequency (max): 12MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 5V
• Operating Supply Voltage (max): 5.25V
• Operating Supply Voltage (min): 4.75V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 68
• Package Type: PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Compliant

Figure 5-35 shows a synchronous read cycle and the important timing parameters that
apply. The timing for a synchronous read cycle, including relevant timing parameters, is
shown in Figure 5-36.
MOTOROLA
UDS/LDS
CLOCK
DTACK
DATA
ADDR
R/W
On the rising edge of the clock, at the end of S7 (which may be the start of
S0 for the next bus cycle), the processor places the address bus in the
high-impedance state. During a write cycle, the processor also places the
data bus in the high-impedance state and drives R/W high. External logic
circuitry should respond to the negation of the AS and UDS, LDS, and/or DS
by negating DTACK and/or BERR. Parameter #28 is the hold time for
DTACK, and parameter #30 is the hold time for BERR.
AS
M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL
6
S0
18
Freescale Semiconductor, Inc.
Figure 5-35. Synchronous Read Cycle
For More Information On This Product,
S1
Go to: www.freescale.com
S2
9
S3
47
S4
S5
27
S6
S7
S0
5- 37