HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 561
HD6412340
Manufacturer Part Number
HD6412340
Description
H8S/2345 F-ZTAT Hardware Manual
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
1.HD6412340.pdf
(907 pages)
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17.5.3
Note: * t
Program using the specified voltages and timing.
The programming voltage (V
If the PROM programmer is set to Hitachi HN27C101 specifications, V
Applied voltages in excess of the specified values can permanently destroy the MCU. Be
particularly careful about the PROM programmer’s overshoot characteristics.
Before programming, check that the MCU is correctly mounted in the PROM programmer.
Overcurrent damage to the MCU can result if the index marks on the PROM programmer,
socket adapter, and MCU are not correctly aligned.
Do not touch the socket adapter or MCU while programming. Touching either of these can
cause contact faults and programming errors.
The MCU cannot be programmed in page programming mode. Select the programming mode
carefully.
Address
Data
V
V
CE
PGM
OE
PP
CC
OPW
Programming Precautions
V
V
V
V
PP
CC
CC
CC
is defined by the value shown in the flowchart.
+1
Figure 17.5 PROM Programming/Verification Timing
t
t
CES
t
t
t
VCS
VPS
AS
DS
Input data
t
PP
OPW
t
PW
) in PROM mode is 12.5 V.
*
Program
t
DH
t
OES
t
OE
Verify
PP
Output data
will be 12.5 V.
t
t
DF
AH
549
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