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參數(shù)資料
| 型號： | ST62T60C |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, SAFE RESET, AUTO-RELOAD TIMER, EEPROM AND SPI |
| 中文描述： | 8位檢察官辦公室/存儲器與阿微控制器/ D轉(zhuǎn)換器，安全復(fù)位，自動重加載定時器，EEPROM和的SPI |
| 文件頁數(shù)： | 13/86頁 |
| 文件大小： | 559K |
| 代理商： | ST62T60C |
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ST62T53C/T60C/T63C ST62E60C
MEMORY MAP
(Cont’d)
Additional Notes on Parallel Mode:
If the user wishes to perform parallel program-
ming, the first step should be to set the E2PAR2
bit. From this time on, the EEPROM will be ad-
dressed in write mode, the ROW address will be
latched and it will be possible to change it only at
the end of the programming cycle, or by resetting
E2PAR2 without programming the EEPROM. Af-
ter the ROW addressis latched, the MCU can only
“see” the selected EEPROM row and any attempt
to write or read other rows will produce errors.
The EEPROM should not be read while E2PAR2
is set.
As soon as the E2PAR2 bit is set, the 8 volatile
ROW latches are cleared. From this moment on,
the user can load data in allor in part ofthe ROW.
Setting E2PAR1 will modify the EEPROM regis-
ters corresponding to the ROW latches accessed
after E2PAR2. For example, if the software sets
E2PAR2 and accesses the EEPROM by writing to
addresses 18h, 1Ah and 1Bh, and then sets
E2PAR1, these three registers will be modified si-
multaneously; the remaining bytes in the row will
be unaffected.
Note that E2PAR2 is internally reset at the end of
the programming cycle. This implies that the user
must setthe E2PAR2bit betweentwo parallel pro-
gramming cycles. Note that if the user tries to set
E2PAR1 while E2PAR2 is not set, there will be no
programming cycle and the E2PAR1 bit will be un-
affected. Consequently, the E2PAR1bit cannot be
set if E2ENA is low. The E2PAR1 bit can be setby
the user, only if the E2ENA and E2PAR2 bits are
also set.
Notes
: The EEPROM page shall not be changed
through the DRBR register when the E2PAR2 bit
is set.
EEPROM Control Register (EECTL
)
Address: EAh
—
Reset status: 00h
Read/Write
Bit 7 =
D7
: Unused.
Bit 6=
E2OFF
:Stand-by EnableBit.WRITE ONLY.
If thisbitis settheEEPROM isdisabled(anyaccess
will bemeaningless) andthepower consumptionof
the EEPROM is reduced to its lowest value.
Bit 5-4 =
D5-D4
: Reserved.MUST be kept reset.
Bit 3 =
E2PAR1
: Parallel Start Bit. WRITE ONLY.
Once inParallelMode,assoonastheuser software
sets the E2PAR1 bit, parallel writing of the 8 adja-
cent registers will start. Thisbit is internally resetat
the end of the programming procedure. Note that
less than8 bytes can bewritten if required, the un-
defined bytes being unaffected by the parallel pro-
grammingcycle;thisisexplainedingreater detail in
the Additional Notes on Parallel Mode overleaf.
Bit 2 =
E2PAR2
: Parallel Mode En. Bit. WRITE
ONLY. This bit must be set by the user program in
order to perform parallel programming. If E2PAR2
is set and the parallel start bit (E2PAR1) is reset,
up to 8 adjacent bytes can be written simultane-
ously. These 8 adjacent bytes are considered as a
row, whose address lines A7, A6, A5, A4, A3 are
fixed while A2, A1 and A0 are the changing bits, as
illustrated in Table 4. E2PAR2 is automatically re-
set at the end of any parallel programming proce-
dure. It can be reset by the user software before
starting the programming procedure, thus leaving
the EEPROM registers unchanged.
Bit 1 =
E2BUSY
: EEPROM Busy Bit. READ ON-
LY. This bit is automatically set by the EEPROM
control logic when the EEPROM is in program-
ming mode. The userprogram should test it before
any EEPROM read or write operation; any attempt
to access the EEPROM while the busy bit is set
will be aborted and the writing procedure in
progress will be completed.
Bit 0 =
E2ENA
: EEPROM Enable Bit.WRITE ON-
LY. This bit enables programming of the EEPROM
cells. It must be set before any write to the EEP-
ROM register. Any attempt to write to the EEP-
ROM when E2ENA is low is meaningless and will
not trigger a write cycle.
The EEPROM is disabled as soon as a STOP in-
struction is executed in order to achievethe lowest
power-consumption.
7
0
D7
E2O
FF
D5
D4
E2PA
R1
E2PA
R2
E2BU
SY
E2E
NA
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