HD64F3337YCP16V Datasheet, PDF (556/749 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Notes: *1 Interrupt requests must be disabled inside and outside the microcontroller until
programming by the update program has been completed.
*2 The vector may not be read correctly in this case for the following two reasons:
• If flash memory is read while being programmed or erased (while the P or E bit is
set in FLMCR1), correct read data will not be obtained (undetermined values will be
returned).
• If a value has not yet been written in the interrupt vector table, interrupt exception
handling will not be executed correctly.
21.5 Flash Memory Writer Mode (H8/3337SF)
21.5.1 Writer Mode Setting
Programs and data can be written and erased in writer mode as well as in the on-board
programming modes. In writer mode, the on-chip ROM can be freely programmed using a PROM
programmer that supports the Hitachi microcomputer device type* with 64-kbyte on-chip flash
memory*. 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.
Note: * The H8/3437 should be used with the PROM programmer programming voltage set to
5.0 V.
Table 21.10 Writer Mode Pin Settings
Pin Names
Mode pins: MD₁, MD₀
STBY pin
RES pin
XTAL and EXTAL pins
Other setting pins: P9₇, P9₂, P9₁, P9₀, P6₇
Settings
Low level input to MD₁ and MD₀
High level input (hardware standby mode not entered)
Power-on reset circuit
Oscillator circuit
Low level input to P9₂ and P6₇, high level input to P9₇,
P9₁, and P9₀
21.5.2 Socket Adapter and Memory Map
In writer mode, a socket adapter for the relevant kind of package is attached to the PROM
programmer. Socket adapters are available for all PROM programmer manufacturers supporting
the Hitachi microcomputer device type with 64-kbyte on-chip flash memory.
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