MC68HC11EA9 Datasheet, PDF (15/58 Pages) Motorola, Inc – 8 BIT HCMOS SINGLE CHIP MICROCONTOROLLER WITH A/D CONVERTER

Freescale Semiconductor, Inc.
Table 4 MC68HC(7)11EA9 Registers (Sheet 2 of 2)
$102F
$1030
$1031
$1032
$1033
$1034
$1035
$1036
$1037
$1038
$1039
$103A
$103B
BIT 7
R7/T7
CCF
Bit 7
Bit 7
Bit 7
Bit 7
0
PLLON
SYNX1
6
R6/T6
0
6
6
6
6
0
BCS
SYNX0
ADPU
Bit 7
ODD
CSEL
6
EVEN
$103C
$103D
$103E
RBOOT
RAM3
—
SMOD
RAM2
—
$103F
0
0
Notes:
1. MC68HC711EA9 only.
2. Factory test only.
5
R5/T5
SCAN
5
5
5
5
0
AUTO
SYNY5
IRQE
5
ELAT¹
MDA
RAM1
—
0
4
R4/T4
MULT
4
4
4
4
PTCON
BWC
SYNY4
3
R3/T3
CD
3
3
3
3
BPRT3
VCOT
SYNY3
2
R2/T2
CC
2
2
2
2
BPRT2
MCS
SYNY2
1
R1/T1
CB
1
1
1
1
BPRT1
LCK
SYNY1
DLY
4
BYTE
IRVNE
RAM0
—
0
CME
3
ROW
PSEL3
REG3
—
NOSEC
0
2
ERASE
PSEL2
REG2
—
NOCOP
CR1
1
EELAT
PSEL1
REG1
—
ROMON
BIT 0
R0/T0
CA
Bit 0
Bit 0
Bit 0
Bit 0
BPRT0
WEN
SYNY0
CR0
Bit 0
PGM
PSEL0
REG0
—
EEON
SCDRL
ADCTL
ADR1
ADR2
ADR3
ADR4
BPROT
PLLCR
SYNR
Reserved
OPTION
COPRST
PPROG
HPRIO
INIT
TEST1²
CONFIG
4.9 ROM/EPROM/OTPROM
The MC68HC11EA9 contains 12 Kbytes of mask-programmed ROM. The ROM array is programmed
at the factory to customer specifications and cannot be altered. The ROM array can be disabled by
clearing the ROMON bit in the CONFIG register.
The MC68HC711EA9 MCU contains 12 Kbytes of on-chip EPROM/OTPROM. When the
MC68HC711EA9 is packaged in a windowed CLCC, the 12 Kbytes of EPROM may be erased by ex-
posing the device to ultraviolet light. An MC68HC711EA9 MCU packaged in a non-windowed case con-
tains 12 Kbytes of one-time-programmable ROM (OTPROM).
Using the on-chip EPROM/OTPROM programming feature requires an external 12.25-volt power sup-
ply (V_PPE). Normal programming is accomplished using the EPROM/OTPROM programming register
(PPROG). PPROG is the combined EPROM/OTPROM and EEPROM programming register
(MC68HC711EA9 only). For the MC68HC11EA9, PPROG is used for programming EEPROM only.
There are three possible methods of programming and verifying EPROM.
4.9.1 EPROM Emulation Mode
The EPROM emulation (PROG) mode allows the on-chip EPROM/OTPROM to be programmed as a
standard EPROM by adapting the MCU footprint to that of the 27256-type EPROM, as shown in Figure
7. Grounding the RESET, MODA, and MODB pins places the MCU in PROG mode. An appropriate
EPROM programmer can then be used to enter data into the on-chip EPROM. Figure 7 shows the MCU
pin functions while the device is in PROG mode.
If the MCU is operating with programming voltage present on the XIRQ/V_PPE pin, the IRQ pin (CE pin
in PROG mode) must be pulled high before the address and data are changed to program the next lo-
cation.
NOTE
PROG mode is disabled in devices having the security feature.
MC68HC11EA9
MC68HC11EA9TS/D
For More Information On This Product,
15
Go to: www.freescale.com