参数资料
型号: M34584EDFP
元件分类: 微控制器/微处理器
英文描述: 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDSO42
封装: 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42
文件页数: 121/157页
文件大小: 1130K
代理商: M34584EDFP
Rev.3.00
2004.08.06
page 66 of 155
REJ03B0010-0300Z
4584 Group
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
ROM ORDERING METHOD
1.Mask ROM Order Confirmation Form
2.Mark Specification Form
3.Data to be written to ROM, in EPROM form (three identical cop-
ies) or one floppy disk.
For the mask ROM confirmation and the mark specifications, re-
fer to the “Renesas Technology Corp.” Homepage
(http://www.renesas.com/en/rom).
(7) Clock control register MR
Register MR controls system clock. Set the contents of this register
through register A with the TMRA instruction. In addition, the TAMR
instruction can be used to transfer the contents of register MR to
register A.
Table 20 Clock control registers
Note: “R” represents read enabled, and “W” represents write enabled.
MR3
Clock control register MR
Operation mode
Through mode (frequency not divided)
Frequency divided by 2 mode
Frequency divided by 4 mode
Frequency divided by 8 mode
Main clock (f(XIN)) oscillation enabled
Main clock (f(XIN)) oscillation stop
Main clock (f(XIN))
On-chip oscillator clock (f(RING))
at reset : 11112
at RAM back-up : 11112
MR3
0
1
R/W
TAMR/
TMRA
Main clock f(XIN) oscillation circuit control bit
System clock oscillation source selection bit
Operation mode selection bits
0
1
0
1
MR2
0
1
0
1
MR1
MR0
MR2
0
1
On-chip oscillator (f(RING)) oscillation enabled
On-chip oscillator (f(RING)) oscillation stop
On-chip oscillator (f(RING)) control bit
Clock control register RG
W
TRGA
at RAM back-up : 02
at reset : 02
RG0
(8) Clock control register RG
Register RG controls start/stop of on-chip oscillator. Set the con-
tents of this register through register A with the TRGA instruction.
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