2024年4月16日发(作者：成飞兰)
HT48CA0 APPLICATION NOTE
. Application Circuit
HOLTEK HT48CA0 (64KEY)
432109876543
222221111111
0
A
C
8
4
1
T
U
H
000
123456789
012
111
K57K49K41K33K25K17K9K1
K58
K50
K42
K34K26
K18
K10
K2
D1D2
K59
K51
K43
K35K27
K19
K11
K3
K60
K52
K44
K36K28
K20
K12
K4
Q1Q2
K61
K53
K45
K37K29
K21
K13
K5
K62
K54
K46
K38K30
K22
K14
K6
K63
K55
K47
K39K31
K23
K15
K7
K64
K56
K48
K40K32
K24
K16
K8
.Working Register Define
;*****************************************************
;@***** Filename : (Remote 64KEY) ******
;@************** OSC:455KHz CARRY:38KHz ***********
;@****************** HT48CA0 ******************
;;*****************************************************
;;***** System memory Map *****
M_INDIRECT1 equ [00h] ;Indirect addressing register
M_MP0 equ [01h] ;Data Memory point
M_ACC equ [05h] ;Accumulator
M_PCL equ [06h] ;Program Counter Lower-order
M_TBLP equ [07h] ;Table Pointer
M_TBLH equ [08h] ;Table Higher-order byte
M_STATUS equ [0ah] ;Micro controll status
PORT_A equ [12h] ;PA I/O register
PORT_B equ [14h] ;PB I/O register
PORT_C equ [16h] ;PC Output register
PORT_AC equ [3Eh] ;PA Temp register
;-----------------------------------
;;--- System FLAG define ---
#define fg_CF M_STATUS.0 ;CARRY Flag
#define fg_ZF M_STATUS.2 ;ZERO Flag
;;--- I/O Pin define ---
#define pn_IR PORT_C.0 ;Carry Output Port
;;--- Address Define ---
#define DATA_RAM 20h ;HT48CA0
;;--- Instruction Define ---
#define NOP2 JMP $+1 ;Long NOP Define
;@------------------------------------------------
SAMPLE .SECTION 'DATA'
;; --- Temp RAM ---
a_SR10 DB ? ;;WORK Temp Register
a_SR11 DB ? ;;
a_SR12 DB ? ;;
a_SR13 DB ? ;;
;;--------- Program RAM --------
a_SCAN_STEP DB ? ;;Scan Key Colummn Step Number
a_PREV_KEY DB ? ;;Save Previous Key Number
a_KEY_NUM DB ? ;;Scan Key Number
a_COL_VALUE DB ? ;;Read on column value to a_COL_VALUE
KD_TEMP DB ? ;;Key Debounce Check Times
NKD_TEMP DB ? ;;Key Release Confirm Times
;;--- User FLAG define ---
fg_SendActive DBIT ;;VALIDITY KEY Flag
fg_PressRec DBIT ;;Check Column Multi_Key Flag
fg_REPEAT DBIT ;;REPEAT KEY Flag
fg_Multi_Key DBIT ;;INVALID KEY Flag
2024年4月16日发(作者：成飞兰)
HT48CA0 APPLICATION NOTE
. Application Circuit
HOLTEK HT48CA0 (64KEY)
432109876543
222221111111
0
A
C
8
4
1
T
U
H
000
123456789
012
111
K57K49K41K33K25K17K9K1
K58
K50
K42
K34K26
K18
K10
K2
D1D2
K59
K51
K43
K35K27
K19
K11
K3
K60
K52
K44
K36K28
K20
K12
K4
Q1Q2
K61
K53
K45
K37K29
K21
K13
K5
K62
K54
K46
K38K30
K22
K14
K6
K63
K55
K47
K39K31
K23
K15
K7
K64
K56
K48
K40K32
K24
K16
K8
.Working Register Define
;*****************************************************
;@***** Filename : (Remote 64KEY) ******
;@************** OSC:455KHz CARRY:38KHz ***********
;@****************** HT48CA0 ******************
;;*****************************************************
;;***** System memory Map *****
M_INDIRECT1 equ [00h] ;Indirect addressing register
M_MP0 equ [01h] ;Data Memory point
M_ACC equ [05h] ;Accumulator
M_PCL equ [06h] ;Program Counter Lower-order
M_TBLP equ [07h] ;Table Pointer
M_TBLH equ [08h] ;Table Higher-order byte
M_STATUS equ [0ah] ;Micro controll status
PORT_A equ [12h] ;PA I/O register
PORT_B equ [14h] ;PB I/O register
PORT_C equ [16h] ;PC Output register
PORT_AC equ [3Eh] ;PA Temp register
;-----------------------------------
;;--- System FLAG define ---
#define fg_CF M_STATUS.0 ;CARRY Flag
#define fg_ZF M_STATUS.2 ;ZERO Flag
;;--- I/O Pin define ---
#define pn_IR PORT_C.0 ;Carry Output Port
;;--- Address Define ---
#define DATA_RAM 20h ;HT48CA0
;;--- Instruction Define ---
#define NOP2 JMP $+1 ;Long NOP Define
;@------------------------------------------------
SAMPLE .SECTION 'DATA'
;; --- Temp RAM ---
a_SR10 DB ? ;;WORK Temp Register
a_SR11 DB ? ;;
a_SR12 DB ? ;;
a_SR13 DB ? ;;
;;--------- Program RAM --------
a_SCAN_STEP DB ? ;;Scan Key Colummn Step Number
a_PREV_KEY DB ? ;;Save Previous Key Number
a_KEY_NUM DB ? ;;Scan Key Number
a_COL_VALUE DB ? ;;Read on column value to a_COL_VALUE
KD_TEMP DB ? ;;Key Debounce Check Times
NKD_TEMP DB ? ;;Key Release Confirm Times
;;--- User FLAG define ---
fg_SendActive DBIT ;;VALIDITY KEY Flag
fg_PressRec DBIT ;;Check Column Multi_Key Flag
fg_REPEAT DBIT ;;REPEAT KEY Flag
fg_Multi_Key DBIT ;;INVALID KEY Flag