GMS36 Datasheet, PDF (23/109 Pages) Hynix Semiconductor – 4-BIT SINGLE CHIP MICROCOMPUTERS

Chapter 2. GMS37XXX
Port operation
Value of X-reg
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
2 or 3
2 or 3
Value of Y-reg
0~ 7
Operation
à SO : D(Y)
à RO : D(Y)
1 (High-Z)
0
8
9
A~ D
E
F
0
1
REMOUT port repeats ‘’H’’ and ‘’L’’ in pulse
frequency. (when PMR = 5, it is fixed at ‘’H’’ )
à SO : REMOUT (PMR) 1
à RO : REMOUT (PMR) 0
à SO : D0 ~ D9
à RO : D0 ~ D9
1 (High-Z)
0
à SO : R(Y-Ah) 1
à RO : R(Y-Ah) 0
à SO : R0 ~ R3 1
à RO : R0 ~ R3 0
à à SO : D0 ~ D9
à à RO : D0 ~ D9
1 (High-Z), R0 ~ R3 1
0,
R0 ~ R3 0
à SO : D(8)
à RO : D(8)
1 (High-Z)
0
à SO : D(9)
à RO : D(9)
1 (High-Z)
0
Optional Features
The GMS37XXX series offer the following optional features.
Theses options are masked.
• I/O terminals having pull-up resistor : R0 ~ R3
• Input terminals having STOP release mode : K0 ~ K3, R0 ~ R3.
• Output form at STOP mode
D0 ~ D9 : ‘’L’’ or keep before stop mode.
Theses options are offered default.
• Ceramic oscillation circuit contained (or not contained)
[ This option is not available for MHz Ceramic oscillator. ]
• Instruction cycle selection :
T = 48 / f_OSC or 6 / f_OSC
2-7