MC68HC11EA9 Datasheet, PDF (41/58 Pages) Motorola, Inc – 8 BIT HCMOS SINGLE CHIP MICROCONTOROLLER WITH A/D CONVERTER

Freescale Semiconductor, Inc.
Bit 3 — Not Implemented
Always reads zero
I4/O5 — Input Capture 4/Output Compare 5 Select
0 = Interrupts from edges on PAI pin are disabled
1 = Edges detected on PAI pin generate interrupts (rising or falling, depending on configuration)
RTR[1:0] — Real-Time Interrupt Rate Select
Table 17 Real-Time Interrupt Rates
RTR[1:0]
00
01
10
11
Rate
Selected
2¹³ ÷ E
2¹⁴ ÷ E
2¹⁵ ÷ E
2¹⁶ ÷ E
RTI Rate Selected
E = 1.0 MHz E = 2.0 MHz E = 3.0 MHz
8.192 ms
4.096 ms
2.731 ms
16.384 ms
8.192 ms
5.461 ms
32.768 ms
16.384 ms
10.923 ms
65.536 ms
32.768 ms
21.845 ms
OPTION — System Configuration Options
$1039
BIT 7
6
5
4
3
2
1
BIT 0
ADPU
CSEL
IRQE*
DLY*
CME
—
CR1*
CR0*
RESET:
0
0
0
1
0
0
0
0
* Can be written only once in first 64 cycles after reset in normal modes, or at any time in special modes.
ADPU — A/D Converter Power up
Refer to 9 Analog-to-Digital Converter
CSEL — Clock Select
0 = A/D and EEPROM use the system E clock
1 = A/D and EEPROM use internal RC clock
IRQE — IRQ Select Edge-Sensitive Only
Refer to 5 Resets and Interrupts
DLY — Enable Oscillator Start-up Delay
0 = No stabilization delay on exit from STOP mode.
1 = A delay of approximately 4000 E-clock cycles is imposed as the MCU exits STOP mode.
CME — Clock Monitor Enable
0 = Clock monitor disabled; slow clock can be used.
1 = Slow or stopped clocks cause COP failure reset.
Bit 2 — Not implemented
Always reads zero
CR[1:0] — COP Timer Rate Select
Refer to 5 Resets and Interrupts
Table 18 COP Timer Rate Selection
CR[1:0]
00
01
10
11
Rate
Selected
2¹⁵ ÷ E
2¹⁷ ÷ E
2¹⁹ ÷ E
2²¹ ÷ E
Period Length
E = 1.0 MHz E = 2.0 MHz E = 3.0 MHz
32.768 ms 16.384 ms 10.923 ms
131.072 ms 65.536 ms 43.691 ms
524.288 ms 262.140 ms 174.76 ms
2.097 s
1.049 s 699.05 ms
MC68HC11EA9
MC68HC11EA9TS/D
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