Renesas H8S/2318 series, Hardware Manual

Page: 753 / 1121

Rev. 5.00, 12/03, page 723 of 1088
17.28 PROM Mode
Along with its on-board programming mode, this LSI also has a PROM mode as a further mode
for the writing and erasing of programs and data. In the PROM mode, a general-purpose PROM
programmer can freely be used to write programs to the on-chip ROM. Program/erase is possible
on the user MAT and user boot MAT. The PROM programmer must support Renesas Technology
microcomputers with 512-kbyte flash memory units as a device type.
A status-polling system is adopted for operation in automatic program, automatic erase, and
status-read modes. In the status-read mode, details of the system's internal signals are output after
execution of automatic programming or automatic erasure. In the PROM mode, provide a 12-MHz
input-clock signal.
Table 17-56 PROM Mode Pins
Pin Names Settings/External Circuit Connection
Mode pins: MD2, MD1, MD0 Low level input to MD2, MD1, and MD0
Mode setting pins: PF2, PF1, PF0 High level input to PF2, low level input to PF1 and PF0
STBY
pin High-level input (do not select hardware standby mode)
RES
pin Reset circuit
XTAL, EXTAL pins Oscillator circuit
Other pins requiring setting: P23, P25 High-level input to P23, low-level input to P25
17.28.1 Pin Arrangement of the Socket Adapter
Attach the socket adapter to the LSI in the way shown in figure 17-81. This allows conversion to
40 pins. Figure 17-80 shows the memory mapping of the on-chip ROM, and figure 17-81 shows
the arrangement of the socket adapter's pins.