HD6432670 Hitachi, HD6432670 Datasheet - Page 813

• Manufacturer Part Number: HD6432670
• Description: (HD64F267x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

transition can be made to verify mode. The error protection state can be canceled by a power-on
reset or in hardware standby mode.
19.10
In programmer mode, a PROM programmer can perform programming/erasing via a socket
adapter, just like for a discrete flash memory. Use a PROM programmer which supports the
Hitachi 512-kbyte flash memory on-chip MCU device type (FZTAT512V3A). A 12-MHz input
clock is needed.
19.11
In user mode, the flash memory will operate in either of the following states:
Table 19.7 shows the correspondence between the operating modes of this LSI and the flash
memory. When the flash memory returns to normal operation from a standby state, a power
supply circuit stabilization period is needed. When the flash memory returns to its normal
operating state, bits STS3 to STS0 in SBYCR must be set to provide a wait time of at least 100 µs,
even when the external clock is being used.
Table 19.7 Flash Memory Operating States
Operating Mode
Active mode
Sleep mode
Standby mode
19.12
Precautions concerning the use of on-board programming mode, the RAM emulation function, and
programmer mode are summarized below.
1. Use the specified voltages and timing for programming and erasing.
Normal operating mode
The flash memory can be read.
Standby mode
All flash memory circuits are halted.
Applied voltages in excess of the rating can permanently damage the device. Use a PROM
programmer that supports the Hitachi microcomputer device type with 512-kbyte on-chip flash
memory (FZTAT512V3A).
Programmer Mode
Power-Down States for Flash Memory
Usage Notes
Flash Memory Operating State
Normal operating state
Normal operating state
Standby state
Rev. 2.0, 04/02, page 767 of 906