参数资料
型号: M37221EAFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDSO42
封装: 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42
文件页数: 61/112页
文件大小: 1207K
代理商: M37221EAFP
52
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
M37221M4H/M6H/M8H/MAH–XXXSP/FP
M37221EASP/FP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
Fig. 8.9.2 P3 output mode control register
Fig. 8.9.3 DA conversion register i (i = 1, 2)
b7b6b5b4 b3b2b1b0
DA conversion register i (i=1, 2) (DAi) [Addresses 00DE16, 00DF16]
After reset
DA
conversion register i
0
to
5
6
0
DA conversion
selection bit
(DAi0 to DAi5)
b0
b1
b2
b3
b4
b5
1
0000
00
000
00
0
000
0
11
1
111
11
1
111
: 1/64Vcc
: 2/64Vcc
: 61/64Vcc
: 62/64Vcc
: 63/64Vcc
: 0/64Vcc
0
7
0
Nothing is assigned. These bits are write disable bits.
When these bits are read out, the values are “0.”
R —
R W
BName
Functions
Fix this bit to “0.”
Note : When use M37221M4H/M6H/M8H/MAH-XXXSP/FP,
there is not this register. Fix to “ 0016.”
b7b6b5b4b3b2b1 b0
P3 output mode control register(P3S) [Address 00CD16]
P3 output mode control register
0
4 to 7
P30 output form
selection bit (P30S)
0: CMOS output
1: N-channel open-drain output
1
P31 output form
selection bit (P31S)
0: CMOS output
1: N-channel open-drain output
2
DA1 output enable bit
(DA1S)
0: P30 input/output
1: DA1 output
3
DA2 output enable bit
(DA2S)
0: P31 input/output
1: DA2 output
After reset R W
BName
Functions
0
R W
R —
Nothing is assigned. These bits are write disable bits.
When these bits are read out, the values are “0.”
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