106
6.2
PROM Mode
6.2.1
Selection of PROM Mode
If the on-chip ROM is PROM, setting the chip to PROM mode stops operation as a
microcomputer and allows the on-chip PROM to be programmed in the same way as the
HN27C101, except that page programming is not supported. Table 6.1 shows how to set PROM
mode.
Table 6.1
Setting PROM Mode
Pin Name
Setting
TEST
High level
PB
7
/AN
7
Low level
PB
6
/AN
6
PB
5
/AN
5
High level
6.2.2
Socket Adapter Pin Arrangement and Memory Map
A standard PROM programmer can be used to program the PROM. A socket adapter is required
for conversion to 32 pins.
Figure 6.2 shows the pin-to-pin wiring of the socket adapter. Figure 6.3 shows a memory map.