MC68HC11EA9 Datasheet, PDF (16/58 Pages) Motorola, Inc – 8 BIT HCMOS SINGLE CHIP MICROCONTOROLLER WITH A/D CONVERTER

Freescale Semiconductor, Inc.
EPROM MODE PIN CONNECTIONS
MCU PIN FUNCTIONS
EPROM
PIN FUNCTIONS
NOTE 1
A0 PC0/ADDR0/DATA0
A1 PC1/ADDR1/DATA1
A2 PC2/ADDR2/DATA2
A3 PC3/ADDR3/DATA3
A4 PC4/ADDR4/DATA4
A5 PC5/ADDR5/DATA5
A6 PC6/ADDR6/DATA6
A7 PC7/ADDR7/DATA7
A8
PB0/ADDR8
A9
PB1/ADDR9
A10
PB2/ADDR10
A11
PB3/ADDR11
A12
PB4/ADDR12
A13
PB5/ADDR13
A14
NC
GND
PE0/AN0
GND
PE1/AN1
GND
PE2/AN2
GND
PE3/AN3
GND
PE4/AN4
GND
PE5/AN5
GND
PE6/AN6
GND
PE7/AN7
A0
O0
A1
O1
A2
O2
A3
O3
A4
O4
A5
O5
A6
INTERNAL _O6
12-KBYTE
A7
EPROM
O7
A8
OE
A9
V_PP
A10
CE
A11
V_CC
A12
GND
A13
MC68HC711EA9
GND PA6/OC2/OC1
GND
PA7/PAI/OC1
GND
V _RH
GND
V _RL
GND
VDDSYN
GND
XFC
PD0/RxD
O0
PD1/TxD
O1
PA2/IC1
O2
PA3/OC5/IC4/OC1 O3
PA4/OC4/OC1 O4
PA5/OC3/OC1 O5
STRA/AS
O6
STRB/R/W
O7
PB7/ADDR15
OE
XIRQ
V_PP
IRQ
CE
V_DD
V_CC
V_SS
GND
PA4/OC4/OC1 NC
PA5/OC3/OC1 NC
XTAL
NC
E
NC
EXTAL
GND
MODA/LIR
GND
MODB/V_STBY
RESET
GND
GND
PB6/ADDR14 GND
PA0/IC3
GND
PA1/IC2
GND
NOTES:
1. UNUSED INPUTS — GROUNDING IS RECOMMENDED.
2. UNUSED OUTPUTS — THESE PINS SHOULD BE LEFT UNTERMINATED.
3. THESE PINS MUST BE GROUNDED FOR PROG MODE OPERATION.
Figure 7 MC68HC711EA9 PROG Mode Connections
NOTE 2
NOTE 3
7EA9 PROG CONN
4.9.2 Programming an Individual EPROM Address
In the second method, the MCU programs its own EPROM by controlling the PPROG register. Use the
following procedure to program the EPROM through the MCU with the ROMON bit set in the CONFIG
register. The 12 volt nominal programming voltage must be present on the XIRQ/V_PPE pin. Any operat-
ing mode can be used.
1. Write to PPROG to set the ELAT bit.
2. Write the data to the desired address.
3. Write to PPROG to set both the ELAT and PGM bits.
4. Delay for 10 ms or more, as appropriate.
MC68HC11EA9
16
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MC68HC11EA9TS/D
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