tmp88ps42ng TOSHIBA Semiconductor CORPORATION, tmp88ps42ng Datasheet - Page 209

• Manufacturer Part Number: tmp88ps42ng
• Description: 8 Bit Microcontroller Tlcs-870/x Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

18. OTP operation
18.1 Operating mode
18.1.1 MCU mode
PROM in place of the mask ROM which is included in the TMP88CS42NG. The configuration and function are the
same as the TMP88CS42NG. In addition, TMP88PS42NG operates as the single clock mode when releasing reset.
18.1.1.1 Program Memory
18.1.1.2 Data Memory
18.1.1.3 Input/Output Circuiry
This section describes the funstion and basic operationalblocks of TMP88PS42NG. The TMP88PS42NG has
The TMP88PS42NG has MCU mode and PROM mode.
because it has no built-in pull-down resistor).
The MCU mode is set by fixing the TEST/VPP pin to the low level. (TEST/VPP pin cannot be used open
FFFFF
13EFF
008BF
FFF00
to FFFFFH in the MCU mode, addresses 00000 to 0FFFFH in the PROM mode).
When using TMP88PS42NG for evaluation of mask ROM products, the program is written in the pro-
gram storing area shown in Figure 18-1.
program storing area between the one-time PROM and the mask ROM to be used.
00000
00040
04000
to
The TMP88PS42NG has 64K bytes built-in one-time-PROM (addresses 04000 to 13EFFH and FFF00
Since the TMP88PS42NG supports several mask ROM sizes, check the difference in memory size and
Note: The area that is not in use should be set data to FFH, or a general-purpose PROM programmer should
TMP88PS42NG has a built-in 2048 bytes + 128 bytes Data memory (static RAM).
1. Control pins
2. I/O ports
be set only in the program memory area to access.
Vector table area
Program area
Mask ROM
that the TEST pin does not have a built-in pull-down resistor.
Reserved
Reserved
The control pins of the TMP88PS42NG are the same as those of the TMP88CS42NG except
RAM
SFR
DBR
Figure 18-1 Program Memory Area
13EFF
FFFFF
008BF
FFF00
00000
00040
04000
to
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Vector table area
Program area
MCU mode
Reserved
Reserved
RAM
DBR
SFR
0FEFF
0FFFF
0FF00
00000
Vector table area
PROM mode
Program area
TMP88PS42NG