Datasheet

Section 19 ROM
Rev.6.00 Sep. 27, 2007 Page 828 of 1268
REJ09B0220-0600
19.20 Flash Memory PROM Mode
19.20.1 PROM Mode Setting
Programs and data can be written and erased in PROM mode as well as in the on-board
programming modes. In PROM mode, the on-chip ROM can be freely programmed using a
PROM programmer that supports the Renesas microcomputer device type with 256-kbyte on-chip
flash memory (FZTAT256V3A). Flash memory read mode, auto-program mode, auto-erase mode,
and status read mode are supported with this device type. In auto-program mode, auto-erase mode,
and status read mode, a status polling procedure is used, and in status read mode, detailed internal
signals are output after execution of an auto-program or auto-erase operation.
Table 19.34 shows PROM mode pin settings.
Table 19.34 PROM Mode Pin Settings
Pin Names Settings/External Circuit Connection
Mode pins: MD2, MD1, MD0 Low-level input
Mode setting pins: P66, P65, P64 High-level input to P66, low-level input to P65 and P64
FWE pin High-level input (in auto-program and auto-erase
modes)
STBY pin High-level input (do not select hardware standby mode)
RES pin Reset circuit
XTAL, EXTAL pins Oscillator circuit
Other pins requiring setting: P32, P25 High-level input to P32, low-level input to P25