MC68HC916Y3CFT16 Freescale Semiconductor, MC68HC916Y3CFT16 Datasheet - Page 152

• Manufacturer Part Number: MC68HC916Y3CFT16
• Description: IC MCU 96K FLASH 16MHZ 160-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC16r

Specifications of MC68HC916Y3CFT16

• Core Processor: CPU16
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 60
• Program Memory Size: 96KB (96K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 160-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

5-44
MOTOROLA
DATA15
DATA8
DATA7
DATA0
Alternate methods can be used for driving data bus pins low during reset. Figure 5-18
shows two of these options. The simplest is to connect a resistor in series with a diode
from the data bus pin to the RESET line. A bipolar transistor can be used for the same
purpose, but an additional current limiting resistor must be connected between the
base of the transistor and the RESET pin. If a MOSFET is substituted for the bipolar
transistor, only the 1 k
offer the protection from potential memory corruption during RESET assertion as does
the circuit shown in Figure 5-17.
RESET
R/W
DS
Figure 5-17 Preferred Circuit for Data Bus Mode Select Conditioning
V
DD
V
DD
V
isolation resistor is required. These simpler circuits do not
DD
OUT1
IN1
HIGH OR LOW
AS NEEDED
TIE INPUTS
74HC244
OUT8
IN8
OE
OUT1
IN1
HIGH OR LOW
AS NEEDED
TIE INPUTS
74HC244
MC68HC16Y3/916Y3
DATA BUS SELECT CONDITIONING
USER’S MANUAL
OUT8
IN8
OE