MC68HC916Y3CFT16 Freescale Semiconductor, MC68HC916Y3CFT16 Datasheet - Page 139
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MC68HC916Y3CFT16
Manufacturer Part Number
MC68HC916Y3CFT16
Description
IC MCU 96K FLASH 16MHZ 160-QFP
Manufacturer
Freescale Semiconductor
Series
HC16r
Datasheet
1.MC68HC916Y3CFT16.pdf
(500 pages)
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
-
- Current page: 139 of 500
- Download datasheet (3Mb)
5.6.3 Fast Termination Cycles
MC68HC16Y3/916Y3
USER’S MANUAL
When an external device can meet fast access timing, an internal chip-select circuit
fast termination option can provide a two-cycle external bus transfer. Because the
chip-select circuits are driven from the system clock, the bus cycle termination is in-
herently synchronized with the system clock.
If multiple chip-selects are to be used to provide control signals to a single device and
match conditions occur simultaneously, all MODE, STRB, and associated DSACK
fields must be programmed to the same value. This prevents a conflict on the internal
bus when the wait states are loaded into the DSACK counter shared by all chip-
selects.
1) NEGATE DS AND AS
2) REMOVE DATA FROM DATA BUS
1) SET R/W TO WRITE
2) DRIVE ADDRESS ON ADDR[23:0]
3) DRIVE FUNCTION CODE ON FC[2:0]
4) DRIVE SIZ[1:0] FOR OPERAND SIZE
ASSERT DS AND WAIT FOR DSACK (S3)
TERMINATE OUTPUT TRANSFER (S5)
PLACE DATA ON DATA[15:0] (S2)
OPTIONAL STATE (S4)
ADDRESS DEVICE (S0)
START NEXT CYCLE
ASSERT AS (S1)
NO CHANGE
MCU
Figure 5-12 Write Cycle Flowchart
1) DECODE ADDRESS
2) LATCH DATA FROM DATA BUS
3) ASSERT DSACK SIGNALS
ACCEPT DATA (S2 + S3)
TERMINATE CYCLE
NEGATE DSACK
PERIPHERAL
MOTOROLA
WR CYC FLOW
5-31
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