MC68340AG16E Freescale Semiconductor, MC68340AG16E Datasheet - Page 110

• Manufacturer Part Number: MC68340AG16E
• Description: IC MPU 32BIT 16MHZ 144-LQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68340AG16E

• Processor Type: M683xx 32-Bit
• Speed: 16MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 144-LQFP
• Controller Family/series: 68K
• Core Size: 32 Bit
• No. Of I/o's: 16
• Cpu Speed: 16MHz
• No. Of Timers: 2
• Embedded Interface Type: UART
• Digital Ic Case Style: LQFP
• Rohs Compliant: Yes
• Processor Series: M683xx
• Core: CPU32
• Maximum Clock Frequency: 16 MHz
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Details

4.2.3.3 CLOCK CONTROL. The clock control circuits determine the source used for both
internal and external clocks during special circumstances, such as low-power stop
(LPSTOP) execution.
Table 4-3 summarizes the clock activity during LPSTOP in crystal mode operation. Any
clock in the off state is held low. The STEXT and STSIM bits in the SYNCR control clock
activity during LPSTOP. Refer to 4.2.6 Low-Power Stop for additional information.
4.2.4 Chip Select Operation
Typical microprocessor systems require external hardware to provide select signals to
external memory and peripherals. The MC68340 integrates these functions on chip to
provide the cost, speed, and reliability benefits of a higher level of integration. The chip
select function contains register pairs for each external chip select signal. The pair
consists of a base address register and an address mask register that define the
characteristics of a single chip select. The register pair provides flexibility for a wide
variety of chip select functions.
MOTOROLA
NOTE: System frequencies are in kHz.
000000
000101
001010
001111
010100
011001
011111
100011
101000
101101
110010
110111
111100
111111
Table 4-2. System Frequencies from 32.768-kHz Reference
Y
NOTE: SIMCLK runs the periodic interrupt RESET and
Freescale Semiconductor, Inc.
STSIM
W = 0; X = 0
For More Information On This Product,
0
0
1
1
Table 4-3. Clock Control Signals
1442
2097
2753
3408
4194
4719
5374
6029
6685
7340
7995
8389
Control Bits
131
786
IRQ pin synchronizers in LPSTOP mode.
MC68340 USER’S MANUAL
Go to: www.freescale.com
STEXT
0
1
0
1
W = 0; X = 1
10748
12059
13369
14680
15991
16777
1573
2884
4194
5505
6816
8389
9437
262
SIMCLK
EXTAL
EXTAL
VCO
VCO
Clock Outputs
W = 1; X = 0
11010
13631
16777
18874
21496
24117
3146
5767
8389
524
CLKOUT
–
–
–
–
EXTAL
VCO
Off
Off
W = 1; X = 1
11534
16777
22020
1049
6291
–
–
–
–
–
–
–
–
–
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