MC68HC11K1CFN4 Freescale Semiconductor, MC68HC11K1CFN4 Datasheet - Page 249

• Manufacturer Part Number: MC68HC11K1CFN4
• Description: IC MCU 640 EEPROM 4MHZ 84-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC11K1CFN4

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Type: ROMless
• Eeprom Size: 640 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 84-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Program Memory Size: -

11.5 Memory Expansion Examples
M68HC11K Family
MOTOROLA
Address: $005A
IOS[A:B] — CSIO Stretch Select Bits
GP1S[A:B] — CSGP1 Stretch Select Bits
GP2S[A:B] — CSGP2 Stretch Select Bits
PCS[A:B] — CSPROG Stretch Select Bits
The first example, shown in
64 Kbytes of external memory to be accessed through a single 8-Kbyte
window. To access eight Kbytes, or 2
need 13 address lines, ADDR[12:0]. The number of memory banks
needed is the total memory, 64 Kbytes divided by the window size, eight
Kbytes. This yields eight memory banks, or 2
lines are required, so expansion address lines XA[15:13] replace CPU
address lines ADDR[15:13].
schematic drawing of this system.
Reset:
Read:
Write:
Each of these pairs of bits contain the binary number of cycles of clock
stretch, as shown in
Freescale Semiconductor, Inc.
Figure 11-14. Chip Select Clock Stretch Register (CSCSTR)
For More Information On This Product,
IOSA
Memory Expansion and Chip Selects
Bit 7
0
Table 11-9. CSCSTR Bits Versus Clock Cycles
Go to: www.freescale.com
IOSB
6
0
Bit [A:B]
0 0
0 1
1 0
1 1
Table
GP1SA
5
0
Figure 11-15
Figure 1-1
11-9.
GP1SB
4
0
13
address locations, the CPU will
shows a memory map and
GP2SA
Memory Expansion and Chip Selects
contains a system with
3
0
Clock Stretch
3
2 cycles
3 cycles
. Thus, three expansion
Memory Expansion Examples
1 cycle
None
GP2SB
2
0
PCSA
1
0
Technical Data
PCSB
Bit 0
0
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