參數(shù)資料
型號: HS4339ESS01H
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer with large-capacity memory
中文描述: 4位HMCS400系列的大容量存儲(chǔ)器微機(jī)
文件頁數(shù): 30/78頁
文件大小: 337K
代理商: HS4339ESS01H
HD404339 Series
30
I/O Ports
The MCU has 53 input/output pins (D
0
–D
13
, R0
0
–R9
3
) and one input-only pin (RA
1
).
The 30 pins consisting of ports D
0
–D
13
, R1, R2, R8, and R9 are all high-voltage I/O pins. RA
1
is a high-
voltage input-only pin. The high-voltage pins can be equipped with or without pull-down resistance, as
selected by the mask option.
All standard voltage output pins are CMOS output pins. However, the R0
2
/SO pin can be programmed
for NMOS open-drain output.
In stop mode, input/output pins go to the high-impedance state.
All standard voltage input/output pins have pull-up MOS built in, which can be individually turned on
or off by software (Table 5).
Pull-up MOS on/off settings can be made independently of settings as on-chip supporting module pins.
Table 5
Control of Standard I/O Pins by Program
MIS3 (bit 3 of MIS)
0
1
DCR
0
1
0
1
PDR
0
1
0
1
0
1
0
1
CMOS buffer
PMOS
On
On
NMOS
On
On
Pull-up MOS
Note:
On
On
— indicates off.
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