HD404318 Datasheet, PDF (27/66 Pages) Hitachi Semiconductor – 4-bit HMCS400-series microcomputer

HD404318 Series
Table 7 Circuit Configurations for High-Voltage Input/Output Pins
I/O Pin Type
With Pull-Down Resistance
Without Pull-Down Resistance Pins
Input/output
pins
V_CC
HLT
Pull-down
resistance
Output
data
V_disp
Input control
signal
Input data
V_CC
Input control
signal
HLT
Output
data
Input data
D₀–D₈,
R1₀–R1₃,
R2₀–R2₃,
R8₀–R8₃
Input pins
Input control
signal
Input data RA₁
Peripheral
Output
function pins pins
V_CC
Pull-down
resistance
V_disp
HLT
Output
data
V_CC
BUZZ
HLT
Output
data
Input
pins
Input data
Pull-down
resistance
Input data
INT₀,
INT₁,
EVNB,
V_disp
STOPC
Notes: 1. In stop mode, the MCU is reset and the peripheral function selection is cancelled. The HLT
signal goes low, and input/output pins the enter high-impedance state.
2. The HLT signal is 1 in active and standby modes.
3. The circuits of HD4074318 are without pull-down resistance.
27