MC68HC11F1MFN2 FREESCALE [Freescale Semiconductor, Inc], MC68HC11F1MFN2 Datasheet - Page 39

• Manufacturer Part Number: MC68HC11F1MFN2
• Description: Technical Summary 8-Bit Microcontroller
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

CSCTL — Chip-Select Control
IO1EN — I/O Chip-Select 1 Enable
IO1PL — I/O Chip-Select 1 Polarity
IO1EN — I/O Chip-Select 2 Enable
IO2PL — I/O Chip-Select 2 Polarity
GCSPR — General-Purpose Chip-Select Priority
MC68HC11F1/FC0
MC68HC11FTS/D
RESET:
* PCSEN is set out of reset in expanded modes and cleared in single-chip modes.
Refer to Table 17.
0 = CSIO1 disabled
1 = CSIO1 enabled
0 = CSIO1 active low
1 = CSIO1 active high
0 = CSIO2 disabled
1 = CSIO2 enabled
0 = CSIO2 active low
1 = CSIO2 active high
0 = Program chip-select has priority over general-purpose chip-select
1 = General-purpose chip-select has priority over program chip-select
IO1EN
Bit 7
0
On-Chip Registers
On-Chip RAM
Bootloader ROM
On-Chip EEPROM
I/O Chip Selects
Program Chip Select
General-Purpose Chip Select
NOTES:
IO1PL
1. EEPROM is present on the MC68HC11F1 only.
6
0
Freescale Semiconductor, Inc.
Table 16 Chip Select Clock Stretch Control
For More Information On This Product,
GCSPR = 0
IO2EN
5
0
Table 17 Chip Select Priorities
Clock Stretch
1
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Bits A, B
0 0
0 1
1 0
1 1
IO2PL
4
0
On-Chip Registers
On-Chip RAM
Bootloader ROM
On-Chip EEPROM
I/O Chip Selects
General-Purpose Chip Select
Program Chip Select
Clock Stretch
GCSPR
0 Cycles
1 Cycle
2 Cycles
3 Cycles
3
0
GCSPR = 1
PCSEN*
—
2
1
PSIZA
1
0
PSIZB
Bit 0
0
$x05D
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