Datasheet

Section 16 RAM
Rev.7.00 Dec. 24, 2008 Page 551 of 698
REJ09B0074-0700
Section 16 RAM
The HD64F2218, HD64F2218U, and HD64F2218CU have 12 kbytes of on-chip high-speed static
RAM. The HD6432217, HD64F2211, HD64F2211U, and HD64F2211CU have 8 kbytes of on-
chip high-speed static RAM. The HD6432210 and HD6432210S have 4 kbytes of on-chip high-
speed static RAM. The RAM is connected to the CPU by a 16-bit data bus, enabling one-state
access by the CPU to both byte data and word data.
The on-chip RAM can be enabled or disabled by means of the RAM enable bit (RAME) in the
system control register (SYSCR). For details on SYSCR, refer to section 3.2.2, System Control
Register (SYSCR).
Product Class ROM Type RAM Size RAM Address
HD64F2218
HD64F2218U
HD64F2218CU
Flash memory Version 12 kbytes H'FFC000 to H'FFEFBF
H'FFFFC0 to H'FFFFFF
H8S/2218
Group
HD64F2217CU
HD6432217 Masked ROM Version 8 kbytes H'FFD000 to H'FFEFBF
H'FFFFC0 to H'FFFFFF
H8S/2212
Group
HDF64F2212
HDF64F2212U
HDF64F2212CU
Flash memory Version 12 kbytes H'FFC000 to H'FFEFBF
H'FFFFC0 to H'FFFFFF
HD64F2211
HD64F2211U
HD64F2211CU
8 kbytes H'FFD000 to H'FFEFBF
H'FFFFC0 to H'FFFFFF
HD64F2210CU
HD6432211 Masked ROM Version 8 kbytes H'FFD000 to H'FFEFBF
H'FFFFC0 to H'FFFFFF
HD6432210
HD6432210S
4 kbytes H'FFE000 to H'FFEFBF
H'FFFFC0 to H'FFFFFF