HD64F3039F18 Datasheet, PDF (501/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 15 ROM
Table 15.10 Settings for Each Operating Mode in PROM Mode
Mode
FWE
CE
Read
V_CC or 0
L
Output disable
V_CC or 0
L
Command write V or 0
L
CC
Chip disable*¹
V or 0
H
CC
Legend:
L: Low level
H: High level
X: Undefined
Hi-Z: High impedance
Pin Names*³
OE
WE
D₀ to D₇
L
H
Data output
H
H
Hi-Z
H
L
Data input
X
X
Hi-Z
A₀ to A₁₇
Ain
X
Ain*²
X
Notes: For command writes when making a transition to auto-program or auto-erase mode, input
Vcc (V) to FWE.
1. Chip disable is not a standby state; internally, it is an operation state.
2. Ain indicates that there is also address input in auto-program mode.
3. The pin names are those assigned in this LSI PROM mode.
Table 15.11 PROM Mode Commands
Command Name
Number
of Cycles
Memory read mode 1
Auto-program mode 129
Auto-erase mode
2
Status read mode
2
Legend:
RA: Read address
WA: Program address
Dout: Read data
Din: Program data
Mode
Write
Write
Write
Write
1st Cycle
Address Data
X
H'00
X
H'40
X
H'20
X
H'71
Mode
Read
Write
Write
Write
2nd Cycle
Address Data
RA
Dout
WA
Din
X
H'20
X
H'71
Note: In auto-program mode, 129 cycles are required for command writing by a simultaneous
128-byte write.
Rev.3.00 Mar. 26, 2007 Page 477 of 682
REJ09B0353-0300